no you don't need no clinical. you just need to stop touching your penis for a while so you can feel the difference in how your penis will respond to real sex.
thank you. that means i don't need any clinical attention yet.
If you refrain from masturbation, your penis will SLOWLY become more firm and more sensitive to touch. You may start to experience higher erections but not right away, give it time. Also, if you still get great erections during sex, a slightly downward erection is not a terrible thing.
As far as playing with yourself and not ejaculating in the end, that is not good. You are suppose to let it out. Otherwise, you may start to feel some tension in the testicles and other awkward feelings. The purpose of masturbation is to reach an ejaculation.
Wearing briefs for 10 years is not bad. I'm pretty sure you don't wear briefs at night to bed so there is your opportunity to let your penis hang free and get all the erections you need.