What daily habits can you change or implement new that can change your life quickly?

I recently started doing stretching and exercises only for 10 mins and it feels so good and I been doing consistently for 4 days now and after exercising it just gives this boost of confidence and you feel like strong but it's weird that next day you fall down because one random thought gets in your mind and you lose all that interest in bettering yourself. It's funny how the mind has so much control on us. I've been analyzing my life lately and seem to notice that I'm not really talkative person because I seem to be carrying shame which makes me feel like I'm behind with social skills. I'm not able to articulate words and communicate at a proper level no wonder why I'm not applying for jobs that are good. I know I'll not get hired because I have limited experience but I've heard that you should apply for jobs even if you're not qualified. And I just don't really like my current job. I feel it's very repetitive, coworkers are always talking bad about management and there is no up skill opportunities seems like I'm just an another number that can be replaced.