I am not what I believe, think, or do.
I am the believer, thinker, or doer.
This settles once and for all the question of low self-worth.
Any ideology or practice that seeks to establish self-worth by any means other than accurately identifying the believer, thinker, and doer as the conscious entity upstream of the belief, thought, and action and recognising that individual as part of or extension of a greater consciousness (with adaptation to whatever religious or spiritual system suits) is doomed to fail.
One could spend time and money building self-worth.
Or one could abandon the erroneous thought system that holds that worth is susceptible to variation between individuals or within an individual over time.