When you play it too safe, you're taking the biggest risk
of your life...Time is the only wealth we're given.
-Barbara Sher

Thomas Edison said, "I never failed; I just discovered 1,000 ways in which the light bulb would not work. And every attempt brought me closer to the knowledge of how it would."

 Resolve  (verb)

Pronunciation:  [ree-'zalv]

Definition: (1) To firmly commit oneself, as to resolve to quit smoking; (2) to end a conflict or other difficulty, as to resolve marital problems; (3) to reduce to elementary constituents, as to resolve an argument into its distinct claims; (4) to reach a firm decision, as Congress resolved to make April Fool's Day a national holiday.

Usage: Today's word may be used as a verb or a noun. As a noun it means "commitment, firm intent," e.g. He undertook the new job with great resolve. 

Suggested Usage: No, it isn't too late to commit yourself to a specific achievement or set of them this year. We most commonly resolve to improve ourselves or our lives in the coming year on January: to reduce our weight, give up smoking, get a better job or do better on the one we have, etc. You can resolve to make yourself better every day!

Dr. Language, YourDictionary.com

I resolve to believe in myself this year; I resolve to believe in you too, always.