1- Resist desires. Eat less. If you crave something, even if it’s halal, occasionally say no to your nafs. Give up some comforts occasionally. This way you strengthen your nafs
2- Remember death 20 times a day
3- Make sure your income is 100% halal
4- Increase your knowledge. Gain religious knowledge at least 30 minutes a day. Study Nahjul Balagha