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.
So, it will not affect your future married life.
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.
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.
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.