How can one make up for accumulated prayers missed due to ritual impurity (janabah) resulting from masturbation, and how can one get rid of this habit?

Masturbation is forbidden and has harms and corruptions. If it results in the emission of semen, then ghusl (ritual bath) is obligatory if one is able to perform it; otherwise, tayammum (dry ablution) should be performed. The absence of clothes is not an excuse for abandoning prayer; the worshipper prays in his current state. If he finds nothing but an impure garment, he should pray in it, bearing in mind that semen is pure. Prayer holds a great status, and it is not permissible to be negligent with it or to intentionally abandon it until its time expires. Missed prayers must be made up. Fear of disbelief (kufr) is sometimes praiseworthy and sometimes blameworthy.