Remember, you need to be in control of your equipment. When you're opening a heavy door, turn your walker sideways, hold onto it with one hand and use your free hand to push. Better yet, ask for help. Empower them to help by telling them exactly them what you need. If your walker doesn' t fit in your bathroom, make sure there's another way to get your balance.
Grab bars are a good solution.
When you take it out of the car and hand it back to your mom or dad, don't forget to lock it open.