I am all the time worried

I am all the time worried. I have that already for a very long time. In the night I often lay awake thinking. I wonder about wether I am good enough as a mother or if my colleges like me, or I am doing my work well enough. Actually I am then happy that the day did not start yet and that I am still in bed.

I often wondered where that fear comes from, because I know it is not real. At least I think so... But I never found out why. Actually I am just all the time worried. Does anybody know this?