ellbee,
To me this feeling you have as much less to do with cross dressing then you think. I know exactly how you feel and worry about it alot, way before I started cross dressing. I have a relative who in his 70s accomplishes more than I did in my 30s.
Here's some questions. Lets say you suddenly loose interest in CD, where would all the time, energy and money that you've put into dressing go? Would you go out and buy half finished mansion to finish? Would you buy an old car to restore? Would you get into model trains?
I've often wondered how my life would be different if I'd never been gifted/cursed with the many peculiarities I have. Would I have roofed my house myself instead of paying to get it done? Maybe I'd fallen off the roof and be paralyzed now. This line of what if thoughts is tempting because it places the blame for my shortcomings off me, but ultimately it's useless.
When I'm honest with myself I know it's not my fetishes and cross dressing that have limited me, but instead it's just the fact that some of the things I want to achieve are hard work and I don't like hard work.
There are many manly qualities that are positive, but there are plenty of manly men, who spend all their free time womanizing, gambling, and laying on the couch watching football while someone takes care of them.
Ask yourself, is my cross dressing keeping me from anything that has to be done? Is it negatively impacting your happiness? Some people are genuinely happy when they are knee deep in rotten floor jousts, but that's not me LOL.