Start here jwfacts.com it will open your eyes to the fact that you are in a cult. I'm sorry to be so blunt.
All the guilt you are feeling is needless. You can live the life you really want, NOW. So read that website and do some research. The JW religion is NOT God's one true channel for mankind. Please check it out. Once you know the real truth you can get on with your life.
I too had huge sexual desires like any normal human being and I fought against them for so long denying myself and all for what?
I too was suicidal and depressed and burdened by the most intense guilt. No longer. Once I woke up all that was gone and I started actually living my life. Now I have no guilt, no shame, no depression and never a suicidal thought. Life is good! Life is NOW.
Please please do yourself a favor and get the facts. Jwfacts.com