Is mild autism in my nature, or did life made me into an autist

One of the reasons I am how I am, is that I tend to live more in my head than being in the present moment, perhaps this is the place I take refuge in when I feel like either life is too dull, or I feel overwhelmed somehow, cause of being full of regrets of things I did not do, etc. I tend to analyse things too much, when I feel like I did something wrong, I retrace my steps and try to think on what I did wrong, in a conversation, at a party, usually I only register a few things that shocked me the most and sometimes those things go in an endless loop like a broken recorder. Events that happened 30 years ago can be still be playing in my mind as something that happened not long ago, chasing me as a ghost of my past, etc. So I spend too much time on the the past, so I have difficulties being or even enjoying the present, is like being tore apart between 2 worlds. The few times I can find myself being in the present moment, yes it feels magical, whimsical, and like being just born. I think I need to try to give some direction to my life, purpose, and try to make the most of it while I still can. 

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