It's easy to be bitter or resentful of circumstances and opportunities -- I think of all the people entering the job market in the past 10-12 years. Get the wrong year in the wrong industry and you'll stagnate at just the wrong time.
For myself, I do not regret the past. I accept responsibility for not capitalizing on my talent, which is itself a talent. I am not bitter for not being luckier in opportunity as I have been luckier than so many. Today, I will sit down and accomplish what I can.
Things Might Go Terribly, Horribly Wrong: A Guide to Life Liberated from Anxiety, by Kelly G. Wilson [http://www.amazon.com/Things-Might-Terribly-Horribly-Wrong/d...]
Shawn Smith - The User's Guide to the Human Mind - Why Our Brains Make Us Unhappy, Anxious, and Neurotic and What We Can Do about It [http://www.amazon.com/The-Users-Guide-Human-Mind/dp/16088205...]
Russ Harris - Getting Unstuck in ACT - A Clinician's Guide to Overcoming Common Obstacles in Acceptance and Commitment Therapy [http://www.amazon.com/Getting-Unstuck-ACT-Clinicians-Overcom...]
Both by Jeffrey E. Young: Schema Therapy - A Practitioner's Guide, and Reinventing Your Life [http://www.amazon.com/Schema-Therapy-A-Practitioners-Guide/d...]
Steven C. Hayes, - Get Out of Your Mind and Into Your Life [http://www.amazon.com/Get-Your-Mind-Into-Life/dp/1572244259]
Charlotte Kasl - If the Buddha Got Stuck [http://www.amazon.com/If-Buddha-Got-Stuck-Spiritual/dp/01421...]
The way I look at it is that if you start a business in your 20s, the odds are against you. You may be young and full of energy, but you don't know shit about the world yet and will make a ton of mistakes. If you do it in your 30s, the odds are neutral. You are more seasoned and possibly have some domain experience under your belt that you can leverage. If you do it in your 40s, the odds are in your favor. You probably have significant domain expertise as well as connections you have established earlier in your career that can help you. It's only in your 50s that you can justify feeling like you're past your prime. Then again, that hardly stops some people.