I Cant Change the Past But I Can Change My Future

That's also part of the purpose of volunteering. No matter what your cause is, you hope to affect the future and hopefully change/erase whatever damage (for lack of a better word) that has already been done.

In general, there is nothing worse when the past keeps us and does not let go. This prevents us to go forward, to achieve the desired, it takes away from our energy does not allow fully enjoy life, build relationships

Every thing we do changes someones life. Especially someone elses life.