I have such guilt about wanting to leave the relationship and need advice on how to go about it. But the relationship is now causing me depression and I'm not a depressed person.

There are serious issues that I can no longer deal with - control and isolation, dead bedroom, partner that has no motivation in life, depression that keeps him at the very bottom all the time. No motivation to take care of his physical or mental health. Financial disagreements - I make plenty of money but he doesn't let me spend it. I've tried to help and have been patient for 5 years after I said I felt I needed to leave the relationship.

I have an appointment with a therapist on Monday to sort through my feelings and guilt.

Any advice on how to handle the actual deed? It will crush him completely and I worry even more about his mental health, but I just have to think about my own happiness.