We need to address your thoughts that creating stress Try mindfulness Mindful breathing exercise Inhale from nose for four seconds when you inhale your stomach should come out and it should inflate .. hold the breath for 2-3 seconds and then exhale from your mouth slowly for 4 seconds like you are blowing a candle that time your stomach should go in and body will relax. Continue to focus on your breath. Whatever your thoughts are or anxiety . Just keep focus on the breath. Don’t give any importance to the thoughts it will make it less powerful and it will go away. You will be more calm and composed. Consult with me or any psychologist for therapy and counseling All the best

Hello There, It seems that you are facing difficulty in being confident about yourself. Your overthinking might only focus on the negative aspects of you which is a form of a cognitive distortion. Drawing biased and negative conclusions about your ability might not prove to be helpful rather it will develop more anxiety.