I think the best thing ever you can do yourself, talk to yourself. While you are doing self-talk: Be patient, understand your worries, and motive yourself.
Self-talk is healthy, I always do. I think my confidence in myself comes from my self-talk.
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Nir Eyal recommends in his book Indistractable that, talk to yourself the way you'd talk to a friend. People who are more self-compassionate are more resilient.