The sun shines not on us but in us.
You have power over your mind – not outside events. Realize this, and you will find strength.
Look well into thyself; there is a source of strength which will always spring up if thou wilt always look.
Strength does not come from winning. Your struggles develop your strengths. When you go through hardships and decide not to surrender, that is strength.
Some of us think holding on makes us strong; but sometimes it is letting go.
Strength and growth come only through continuous effort and struggle.