By personal experience i found that learning as much as you can about their lies, cover ups and false teachings washes away any beliefs i once had. When they're gone the healing can begin. -- Pale.Emperor
My experience was as same as Pale Emperor. Learn a lot about the real true WT history, lies, cover ups, manipulations, their inhumane blood policies and I bet you wouldn't feel anything guilty thereafter. Also, do a lot of research about the Bible also, if you still believe its gods word.
You would end up as a free and happy person.