I can understand your frustration. As you have yourself said “you takes one wrong decision and that is to get married with a wrong woman”. Believe me we have all done the same wrong and are paying for it. But nobody commits suicide. Life is much bigger than a bad wife. First of all consult a good lawyer who can guide you what to further steps to take. If possible take Anticipatory Bail for all your family members. It might be heavy on your pocket but it is much better than waiting for your wife to file a FIR or 498a case against you and getting arrested and then trying to get bail later, for your mother and sister and their family, to come out of lockup.