Everybody struggles with insecurities, to some degree. Some people are more prone to insecurity than others, and some have learned to successfully overcome them, but insecurity is real and it's universal.
Life’s toughest struggles are intended to make you better, not bitter. Your struggles with “losing” develop your greatest strengths. Failure is not falling down; failure is staying down when you have the choice to get back up.
9 Fears You Will Regret Never Facing
"You have power over your mind – not outside events. Realize this, and you will find strength."
3 Ancient Philosophy Tips to Help You Cope With Stress