Ever heard of the term ‘islands of competence’? Those with low confidence report that they feel as though they are not good at anything at all (i.e. they perceive a “sea of incompetence”).
This is a delusional feeling; everyone has their talents! Find things that you are good at, focus on these, and develop your skills.
Soon your island of competence will begin to grow and you may even find new islands to focus on. This is a process of building both confidence and resilience.