I was 45 when I was diagnosed Bipolar - this after two hospitalizations (one I was obviously in psychosis the second I was manic).

In hindsite, I see events, situations, and periods of my life where the diagnosis explains things like my behaviour. I ought to have been treated a long long time ago and wonder where my life would be now had I been emotionally stable. I both regret and to an extent resent I never recieved treatment earlier.