Ok, love the vulnerability. It takes courage to ask for help.
1. Understand and accept the fact now that this is a process that is going to take time. You will need to save money, fix the credit, and get better skills to do it.
2. Call a local mortgage lender. Ask them what you have to do to get a pre-approval. Any good mortgage broker will guide you through this process. They should be explaining how the process works, interest rates, and should be asking what monthly payment you're comfortable with. You may not qualify immediately. Have them tell you what you need to do to get approved. Can your wife be on the loan or get her own?
3. Go to CreditNerds.com. They do free credit repair. You'll have to jump on a couple 10-15 min calls prior to going through the process but they will assist you in getting your credit up.
4. Use bigger pockets, youtube, and books as your resources right now. No netflix. No gaming. No bar nights. Less leisure time out. Go into study mode. Become a student. Go to your local real estate meet up and start going to real estate networking events. Meet people and tell them what you are trying to do. You can get into RE investing with little or no money but you will have to have something else. A skill, a network of people to help, a deal to partner on, etc.
5. My sister is 21. She was at Mass Art majoring in visual design. Her passion and main hobby is content creation, marketing, using social media as a tool, and so on
So she was given the opportunity to change to Johnson and Whales and major in media/content field. At the very same time, a person from her network within the content creation, marketing, social media world offered her an internship that very summer at a media company. Then shortly after offered her a full time position.
Now her choice became to pay $60,000 a year to learn in a classroom about media/content... or to go and get paid $60,000 a year to gain the real world experience in that field to learn and grow.
It may be worth considering if you should go to business school or if you should just get into business. Could be alone, could be with partners, could be working for someone who has the lifestyle that you want.