As time passes by we may tend to reflect on the state of our lives and the things we wish we would or could have done. The solution is to not regret the things you wish you would have done, but to do them. Choose something simple that you want to do and do it today. Don't let today become tomorrow and tomorrow become next week and next week become next year without taking action.

Never stop dreaming, never stop setting goals, never stop striving to improve your life and the lives of others.
A man is not old until regrets take the place of dreams. – John Barrymore