It is not just gambling but everything of which someone is addicted, is not easy to give up. You are the person who can help you at first, you need to make yourself assure that what were you doing till now was wrong and is bad in all perspectives then seek external help. It needs strong will and clear vision driven by inner will and you can get rid of gambling addiction over the time.
Yes, it will not be easy for people who are addicted, but it will not be difficult if we really intend to stop and try to be serious. It will not be a difficult thing if our intentions and efforts are greater than our lusts.