Thought for the Day. (TRIGGER warning: suicide mention)
So, I loved reading sci-fi and fantasy when I was younger and there is a great series by the incomparable Piers Anthony entitled 'The Incarnations of Immortality'. Each book follows one of the five incarnations. The first book is about being the Incarnation of Death. In it, he goes to attend to this one fellow who is committing suicide in his bathtub. The guy and he have a discussion about suicide and why the dude wanted to die. The man was insistent that he be allowed to die and wanted to pass into oblivion. Since the dude had already done the deed, Death was just there to facilitate his soul passing. However, once he attempts to do this, the 'soul' just disintegrates. Death has this thought as he is leaving the scene.
"That man was half right. He may be better off without the game but the game may not be better off without him"
This thought is one that I struggle with constantly. Mainly because, if this is to be true, then it sure would help some of us to know that the game is better off, because, for some of us, there is little to no proof that the game is so. Yet, we are expected to just believe that somewhere, some faceless person has benefited from something we did or said. There is no proof that such a thing has ever happened to anyone I have ever interacted with. Without proof, why should I worry about that statement? I do, but why should I?
(Just a thought that I always have. I wanted to get other opinions on it. Thanks in advance. Also, yes, this is about mental health support, as I do not see this as a viable reason to stay alive, which makes it a 'platitude' and almost insulting. Yet, people say a variation of this stuff to me all the time. Why should anyone believe a word of this when there has never been any sign that my life has had a positive effect on anything? I understand that some will say "You should not want to be rewarded for such acts." I am not looking for that. But, I need some evidence that I have had this effect on someone because otherwise I have to go on the evidence that I do have. And that evidence all indicates that I am a waste of skin. Call me shallow you must, but some proof of accomplishment would do wonders as far as helping my mental state. Why is that such a tall order?)
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It is an important question.
What would you consider, "proof of accomplishment?" When I was asking these kinds of questions, I considered it an accomplishment to just survive every day.
I cannot argue with that one.
I don't know exactly what might constitute 'proof'. Maybe just evidence that such a thing did happen? To see something palpable?
Back in the day, one thing that I had happen is I had a few students who learned guitar from me. After a time, both of them were much better than I was. Both did not pursue it but both have a great appreciation for music and the instrument. So, that is proof. Both also took the time later on in life to let me know this. That was proof. Now, I know that sounds egotistical. And, it probably is.
But, it would sure go a long way towards helping me see that I have done something in life worthwhile. And, that would help my depression and feelings of failure a lot.
Maybe that is too much. That is why I was curious about hearing other opinions on the thought. 
with what keepthesoulalive says - it is these small things that we do when interacting with others that mean so much. And, regretfully, we will never have that Clarence angel at our side to show us the ripple effect of our lives. 
As an aside, but related to your post, I loved Piers Anthony's series on the immortals.
to go back to your original post, this came across in an email to me this morning - "Through my thoughts, words, and actions, I have a vital role in bringing peace to earth." It is something I am going to live into. Perhaps it will give you some peace.
I did something small for someone once that apparently did make a difference.
It was my freshman year in college, orientation week. We were in the middle of taking placement tests. The tests were voluntary, but why repeat a lot of things we had learned in high school, or AP courses?
It was a beautiful day. I was walking back to my dorm. A girl was walking a bit behind me, crying. Finally, I turned around and asked her what was wrong, and if I could help. She told me that she had just bombed a Latin placement test. I invited her back to my dorm room and gave her coffee. She talked about it. After a while, she felt better.
About a week later, I went to her floor and found her. She was doing okay.
Flash forward to senior year. This girl was a superstar, getting ready to graduate with high honors. Earlier, she had been talking to a group of girls. A couple of them did not like me. They thought I was crazy and weird. She said, "Wait a minute," and told them the story that went back to our first week in school. She defended me. One of my acquaintances repeated this defense to me. I verified that it had happened. I was touched by this story. I had some affirmation that I had done something right at least one time. There are surely some things in your past that are like this incident. You may never find out about them, but I am certain that they are there.