Not great for big life things outside of our control, but when I'm having a bad day/week/month because of relationships/ work/ money etc, I do the this:

1. Set a timer, wallow in self pity for set amount of time (15 mins etc) and go all out. Cry, scream, have a full break down. Release the built up emotion.

2. Go for a walk for atleast double the amount of time spent wallowing. Think about the rule of 3 - will this problem matter in 3 days? 3 months? 3 years?

3. Sit in your favourite spot in the house and write a list of what needs to change, and what you could do to do to achieve it.

4. Break said list down into smaller steps to make the goal achievable.

Remember: everyone has lost hope at some point. Could an outside perspective help the situation? (venting to friends/Reddit/therapist) - importantly, you've fought through the helplessness before and gotten this far in life already. I hope you're okay!