down a slope

I don't know what is wrong with me anymore.  I guess its just life, stress and the realization that now at 41, everything is on the rocks. I mean im like thinking that life should have been set on cruise by now considering the life i led up until now. I had enough life events, enough drama enough loss, hard work etc.  Like somewhere down the line, my life made a left turn and it hasnt ever gotten back on track. I can definitely name specific circumstances that made an impact on my life, either i learned from it or just dealt with it but it looks from the outside that im repeating shit. Am i that stressed, like what happened?