I'd suggest you do get some professional help as it may not be something you can sort on your own.I assume you have MPB, so the thing is what would happen if you grew it? How bad would it look? How would that make you feel?The question is, if it would look worse then by shaving it you're making the best of yourself. You're also doing that by going to the gym.So at the end of the day you have to just have confidence in yourself.Put into context, there are people without limbs, horrifc burns, physical disabilities, these people have far more to face and often do it whilst achieving a lot and more than able bodied people do. In some ways you have to give yourself a reality check and think you know what things aren't that bad. You get one shot at this life, embrace it, don't waste it over the small thing.
Marshal S. , great piece of advice . One thing about this forum , their is a vast amount of experience and knowledge , freely and generously given.