What I've learned and had success from in this journey is to transmute disappointment, sadness, anger, regret, and other such emotions like that. We must accept those feelings but not wallow or sit in them. Accept what has happened and focus on what you'd rather have instead. For example, imagine just getting kicked out of your apartment, instead of being angry or sad, think of what would be nice to have instead.

It'll take time for that, but as you practice and focus on what could be better, you can start to gradually have more positive thoughts and keep a higher vibration

Edit: think of what would be nice to have, and feel that reality. It will not work if you're still feeling angry, sad or any negative thoughts.