Hello thanks for asking from HCM for your health related queries I can understand your concern. First of all I would like to tell you that masturbation is not a bad habit and it is not associated with any serious side effects. If you are doing excess masturbation then I would advise you to reduce the frequency of masturbation by self. Dopamin is a neurotransmitter in brain and its balanced amount in brain is responsible for feeling of pleasure and reward. The release of dopamine occurs through a complex processes. Heavy exercise result in release of endorphins which are natural opioids in body. These chemicals result in stimulation of reward system and individuals feel the pleasure. Take diets rich in aromatic amino acids and proteins and low in fats and your serotonin concentration in brain will increase. Visit a doctor for detailed help and for treatment of OCPD. Thanks, Hope this helps you. Take care