Shut the world out, turn off the complaining, self pity or any other issues and take three moments:
one in the morning , one in the afternoon and one just before bed and say wholeheartedly( if you cant, fake it until you feel it and believe it)

Thank you G-D for making me so AWESOME
with eternal value and importance unchangeable by and independent of anyone or anything and totally dependent on YOU

Most people dont appreciate themselves, their value and importance which our connection to G-D takes to a totally epic level

Saying this three times a day ,everyday will help condition you , program you to a powerful positive mindset conducive to positive self appreciation ,fulfillment ,growth and success physically and spiritually

This is not hubris as you are thanking Hashem and thus acknowledging that it is all from Hashem

Change your power word everyday, here are a few to help feel free to add....Let me let you in on a secret when you truly learn to appreciate yourself , others and find who you really are and your impact on the world you will realize that no matter who you are even these words dont even begin to describe or capture the amazing Divine you that G-D created

AWESOME

INCREDIBLE

MAGNIFICENT

FANTASTIC

AMAZING

BEAUTIFUL

SENSATIONAL

TERRIFIC

WONDERFUL

EPIC

LEGENDARY

GREAT

EXEMPLARY

UNBELIEVABLE

INSPIRING

ASTOUNDING

SPECTACULAR

IMPRESSIVE

STUNNING

EXTRAORDINARY