How can one get rid of masturbation, distinguish between mani (sperm/seminal fluid) and madhiy (pre-ejaculatory fluid), what is the effect of masturbation on the hymen, libido, and the shape of the sensitive area, is repentance from it accepted, and how can one regain focus and overcome weakness?

Masturbation (self-abuse) is forbidden, and it has religious and health harms. Sincere repentance from it is obligatory, and Allah accepts the repentance of the sincere. It is advised to hasten to marriage and not delay it for the sake of studies, as masturbation may affect the hymen and weaken sexual desire. One can refer to related fatwas for more information. The distinction between mani (sperm) and madhi (pre-seminal fluid) is correct.