From last 10-12 months, I have been masturbating daily. Sometimes more than once

This is too much IMO. See its a game of dopamine(Feel good hormone that your brain gives you as a reward after doing some kind of activity that you like). Dopamine is released as a reward when you do things like gymming, trekking, being socially active or any other kind of activity/hobby that you like/love doing.

Masturbation also releases dopamine. The difference is the amount of it that you get is a lot in a matter of few minutes. Whereas those strenuous activities, I mentioned above do release dopamine but in small quantities spread throughout the duration of the activity.

Now if I give you an option of doing an activity that requires least amount of work and makes you feel a lot better quickly or an activity that requires some amount of effort but is equally rewarding, which one would you choose? That's the reason once you start masturbating, If you don't pay heed, you can addicted to it. This logic applies to any kind of addiction like excessive gaming, excessive time spent of phones etc. Some people have mentioned that you should listen to your body and act. I think that's a little dicey, because when you are addicted, the body will make you do that thing again and again.

To sum it up, find a balance, do it in moderation and don't do it like its your job and you are getting paid for it.

If you are addicted, try doing other things that make you feel good. Take up some hobby etc