If you do any of these things, you hurt your chances of getting approved for a mortgage and getting a good interest rate.
These things are red flags for lenders, who see unstable income, lots of spending, and closed or open lines of credits as a risk.
If you want to buy a home, you need to pay close attention to your finances and all of the factors that can impact them and your credit score.
1. Don't leave or change your job
2. Don't make any large purchases
3. Don't open or close any lines of credit