Hello Pawan..
First of all remove all myths & misconceptions from your mind about
masturbation.
In fact, Masturbation is completely normal & doesn't have any bad effect to the body and mind.
However, connections between
erectile dysfunction & excess use of porn has been reported in many studies.
For those affected, recovery takes place by 6-12 weeks & mainly involves avoiding the causative factor, that is watching porn.
Regarding the problem of
premature ejaculation, it's mostly related to anxiety.
So...don't worry about all this & stay relaxed
Avoid stress...practice
meditation..this helps in improving concentration & builds up the confidence level.
Have a diet rich in fruits, vegetables, fish, nuts & honey.
Avoid smoking & alcohol.
One more thing...avoid consuming any
over the counter medication which claim to increase the size of penis or improve performance...it may be harmful.
Wishing you a Healthy Life.
Take care.