I'm just waiting until after I do my kegels/reverse kegels and get my EQ back to what it was when I was 17-18 if not better. I'm more concerned about getting my body back to where it should be before approaching girls. The only girls I'm waiting to approach until I reach my goal or at least gain size are Hispanic/Latina and black girls. White girls are used to average sized cocks so if that's what you got then you might not be huge to them but you'll be adequate I'm sure. At the very least, you can use the experiences to become a well-rounded lover so that the big cock is just the icing on the cake for them.
But however I can relate to you as my entire life for as long as I can remember has been about simply meeting my goals and everything else coming second. That changed this year, when losing the love of my life made me realize I've never actually just let myself live.
Here is what I'll say. Do the work to achieve your goals and do it like it's second nature, but don't let it become your life. At the end of the day, more experience in bed will help you when you get bigger so that you're even more able to rock her world. You can't compensate for experience or other things like that with just getting really good at something or in your case really big.
You're right, it is very difficult to break this mindset. For me it came down to really coming to understand why I was so focused on my goals instead of living, and how to fix the problem that was causing that mindset. It's a difficult balance to maintain. You have to work and strive to meet your goals and be disciplined about it but not have the mindset that you need to meet your goals before you can do this or that. You have to accept yourself as you are while working to improve yourself, and be self assured and comfortable in your own skin. Remember, life is about living, not just achieving. My problem has always been lack of experience with anything except very businesslike, impersonal fuck sessions, almost like buying a hooker. This is due to spending most of my life to this point first trying to just "get through it" and trying to survive my circumstances and then dealing with the issues I have thanks to those circumstances. I figured becoming a basketball player would make up for that because groupies would be interested in me anyway so I could at the very least use them for experience, but now I realize it's not supposed to be that easy, Meeting goals is not supposed to be a substitute for living or a prerequisite for it.