When someone is obsessed with the s*****g of weed and you wants to stop with immediate effect..one has to observed some certain process or steps to curb it..

Stop purchasing them/getting it

If you have committed yourself to living weed-free than this should be your first step. Unlike tobacco or alcohol, stopping buying weed should be the easiest part of quitting, since it is not so readily available – unless you live in a state when recreational m*******a is legal. You can’t smoke it if you don’t get it. This step involves nothing more than sheer willpower.
You might feel strong urges, once your stash is gone, to pick up the phone or go over to a friend’s house to get some but find a way to distract yourself – spend some time with a loved one, go out with non-s*****g friends, do something fun that does not involve getting high.

Get rid of paraphernalia

During your weed-s*****g days, you probably surrounded yourself with all kinds of accessories, pipes, bongs, rolling papers, grinders, etc. Once you have entered that new, weed-free phase in your life, it can only makes matters worse to have all those triggers around you. So it only makes sense to get rid of them all. If some of those accessories were expensive or hold some kind of sentimental value, you can give them away just so you don’t have to see them everyday.

Controlling Craving

The most serious of these pitfalls is the incessant cravings that come with quitting all of a sudden.
The unique thing about weed is that, unlike nicotine which leaves the body relatively quickly, the active chemical ingredient in weed, THC, is stored in fat cells, so even after you stop s*****g small amounts of THC get released into your body, which invariably triggers cravings.
You would think that this would actually help you – kind of like a nicotine replacement therapy but for weed – having small amounts of THC released into your body. Except, since they are only small amounts and since your body is used to receiving more, it actually works against you.
Controlling cravings then becomes your most difficult and most important task. Some of the better ways to control you cravings include:

+++Doing something else – Seems really simple, doesn’t it? But it is true that distracting yourself from wanting to smoke weed is a very easy way to control your cravings. Take up a hobby, do something you always wanted to do but were too high too start or finish and you will forget all about weed.
+++Exercise/Physical activity – Why don’t we exercise more? It helps with practically everything, from your overall physical health to alleviating symptoms of depression, exercise is a cure-all. Helping take your mind off of s*****g weed is another thing that exercise is excellent at doing.
+++Having a support system – Having people you can call in times of need is essential in life, but when you are trying to quit weed it is doubly useful so they can give you the support and motivation to stay away

Get a good motivation from your family/friends

As a victim of this The first things you need to do is involve your friends and family in your venture. They can be your biggest motivation and can help you stay positive 24/7. Without their help and support you will feel lonely, even depressed and might want to go back.

Trick the brain,minimize the withdrawals

I think this is one of the best method.

The simplest trick to make sure you suffer the minimum withdrawals is to set up your pot portions ahead of time and take only as much amount as you have promised yourself. So, treat it just like taking your medication and not a recreational activity. Then gradually reduce the amount you take before you eventually stop.

See a therapist

When you are not satisfied with other methods,at this level you can now invite De therapist or vist the therapists.

If all else fails and you’re still having trouble with withdrawals, do see a therapist. You might think there is some stigma attached to it, but let’s not forget that a bigger stigma is attached to excessive weed s*****g. Try to find someone who specializes in addiction issues, more specifically in m*******a addiction. You may also join a support group so you could talk to people going through the same situation as you. It can be very helpful to share your thoughts with them and to listen to their thoughts and learn how they are coping with their predicament. As the adage that says “” A problem shared is a problem Solved””..