Question about mind control How to develop strong mind?,
how to overcome lust which comes to mind again and again?,
I have tried meditating but failed.
When you have lust recognise you have lust. Mere having lust is not failing in meditation but not recognising it is a failure.

To overcome the lust (one of the 5 hindrances) the main issue is that you have not taming you senses. You cannot avoid contact so each time some lustful thought arise in your mind look at the sensation it creates in the body. Look at this at mere thought and look at the impermanence of the sensations fantasizing or actual contact brings.

Following links might be off some help:


5 hindrances
lust