First tell yourself what you want to be, then do what you need to do.

One that desires to excel should endeavor in those things that are in themselves most excellent.

Man is not worried by real problems so much as by his imagined anxieties about real problems

When you have decided that a thing ought to be done and are doing it, never avoid bein seen doing it, though many shall form an unfavorable opinion about it. For if it is not right to do it, avoid doing the thing; but if it is right, why are you afraid of those who shall find fault wrongly?

When therefore we are hindered, or disturbed, or grieved, let us never attribute it to others, but to ourselves; that is, to our own principles. An uninstructed person will lay the fault of his own bad condition upon others. Someone just starting instruction will lay the fault on himself. Some who is perfectly instructed will place blame neither on others nor on himself.

One of the best ways to elevate your character is to emulate worthy role models

Your master is he who controls that on which you have set your heart or wish to avoid.