Gratitude is the most powerful gift one can ever give to others and most importantly to their own self.  Your journey from hitting rock bottom would end with the exchange of gratitude. You will have to start with basic contributions such as praising yourself for the littlest of things, encouraging yourself for being able to do away with your bad habits, paying gratitude to yourself for being courageous enough to get out of the dark phase of life and stand with your head held high.