So, you need to start out by reciting Surah Ikhlas and Durood-E-Ibrahim as normally as you can immediately after each individual compulsory prayer (Namaz). Then it might assist when you recurring "Wala Houla Wala Quwata, Ila Billa Hil Aliyul Azeem" not less than 1000 occasions day-to-day. Remember to do Astagfar for each of the poor sins you did