A big promise saying that growing older in business surrounded by young people does not have to be totally painful. Clearly and entire book or even series of books could be written about this topic, but here we will keep it as simple as ABC.
A. Decide what you are best out and create a company around it, if you have not done so yet.
B. Consider your own unique strengths when it comes to promoting what you do. Hint: thing of what you have had successes with in the past and reinvent those strategies for the present day.
C. Work smarter not harder. If you find yourself getting to caught up in having to have everything be perfect, you are going about it the wrong way. You need to be active and not cerebral, doing more than thinking, but of course think your plans through (just not for too long).
Good luck!