It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all—in which case, you failed by default.
It is far better to try to do something and not reach your expectations than not try. The reason is that as you continue to try, you learn more about your strengths and limitations. Only then do the right choices become easier and more natural.
Without realizing it, failing to try something you would really like to do promotes negativity, a cousin of stress.
With the risk of trying comes the reward, which always results in learning of some kind. In the final analysis, something is lost when we live without trying since we learn more from our failures than from our successes.
Tip: Ask yourself: Would you rather be disappointed by not trying or learn from your efforts?