Don't depend on death to liberate you from your imperfections. You are exactly the same after death as you were before. Nothing changes; you only give up the body. If you are a thief or a liar or a cheater before death, you don't become an angel merely by dying. If such were possible, then let us all go and jump in the ocean now and become angels at once! Whatever you have made of yourself thus far, so will you be hereafter. And when you reincarnate, you will bring that same nature with you. To change, you have to make the effort. This world is the place to do it.