I think my marriage is over

Let me start by saying I love my husband dearly. We will be approaching our 10 year wedding anniversary and it’s been a tough last few years. We have a LO and that was difficult to achieve to say the least. It was always my dream to become a mother and it was my husband dream to be finically wealthy. His dreams have been put on hold and it’s really making him depressed and it has been on and off for the past 3 years but getting worse. I have tried to support him, encouraged him to speak to someone, listen to him vent. All to no avail. He says he needs time to get through this on his own. But he creates this toxic environment that I don’t want to be around. I don’t think things will get better cause they have only gotten worse. We haven’t had a date since Feb - which I had to plan and organize everything for him. I am considering going on a date myself cause I would rather enjoy the company better.. lol -how long do I have to be miserable with him?