As Smiddy pointed out on page 1, you left at 12. You don't know the religion of Jehovah's Witnesses. You only know that they say they are right and everyone else is wrong, they teach living forever in paradise.
I can tell you that anyone can start a journey of spiritual learning. Each person's journey will be different. I will tell you a little about mine if it helps.
I first started learning that the religion I believed (Jehovah's Witnesses) was loaded with contradictions and changes and failures of predictions. jwfacts . com was a big help. Reading books such as COMBATTING CULT MIND CONTROL and CRISIS OF CONSCIENCE was my biggest help.
Next, I assumed that "Christendom" was probably correct. But I continued learning before just accepting that. I examined the Bible, their main tool. One great book that helped me was THE BIBLE UNEARTHED by Finkelstein and Silberman. Also, there were two video series, one from Nova and one from BBC, both called THE BIBLE's BURIED SECRETS. There was much much more, but all must find their own path.
After being positive that Christianity was not the way, I briefly looked at Buddhism. The greatest thing about Buddhism is that you can accept any or all of it, you can reject as much as you want and still benefit from the wisdom and guidance remaining. But that wasn't satisfying enough. As a former JW, I had to know "the truth" from the lies. So finally, I started learning what science has to say. I read about the origins of the planet, life, the universe, the big bang, etc. Also, while I was learning about beliefs outside of Christianity, I was meditating on thoughts that were critical of God. Would a "loving" god allow a tsunami that wiped out tens of thousands of children? ....or an earthquake that killed and injured tens of thousands of children?
Anyway, I think you can see where I went. My point is not to just return to the religion of your youth. I did that in a time of trouble and went back to Jehovah's Witnesses. I wasted precious time and stayed in a depression for a long time. I could have gotten the professional counseling that I needed and started my proper journey of spiritual learning much sooner.
Best to you.