What if the desire is too strong?

If it's materialistic, it's simple. Either earn money to buy it yourself, or refrain from buying it yourself.

If it is a spiritual desire, for example, I want to surpass someone and get into a good university, then I have to take practical actions to realize what you want.

If it is sexual desire, you have to restrain yourself, because masturbation will really affect your development. I strongly recommend this less.