It is important for every life area and a good vibration:
Be well-groomed, wash yourself, dress pleasantly (if sometimes not possible at least with regularly washed clothes)
Take care that you do not stink
Clean up and keep your apartment/house clean and tidy. If you are a creative mind and a bit of clutter doesn’t bother you that’s fine. But I do recommend selling or storing unused items that you haven’t used in a while.
At least do some exercise. Do a sport that you like. It’s easier for you that way.
Socialize with friends and family or co-workers at least once every 2 weeks. If you have problems in this area, seek help or use the internet. But you need to spend time with real people who are facing you. Just talking on the phone or chatting is not enough.
Eat healthy.
No smoking, no alcohol in large doses.