Yeah I get it, when I took my daughter to look at universities I felt a pang wash over me. I could have done this and there were no tuition fees then! Frustrating is putting it mildly.
The way I cope is by thinking as broadly about life as possible. Try and think globally and historically. So many kids don't get to go to school let alone college because they are dirt poor in a poor country. For millennia poor people were trodden underfoot by the privileged rich. We are by pure accident born in rich countries and we live in a great century.
As you say your life is not so bad and neither is mine. I would have like a better job and be able to travel more but life is what it is. Probably the hardest thing to live with is that we have done it to ourselves, but we were indoctrinated, many of us from babies. I just try and be grateful for what I have now and move on. It doesn't mean it hasn't hurt badly in the past.