Its about trusting your equipment. Practice your whole set up from one step off the ground. Or your platform, whatever you are using. Slowly lean onto your seat where you can still grab your tree if you get nervous. Sit back in it a hand full of times until you are comfortable with that transition. Then my advice, get wild doing things you wouldn't do while hunting. Put your whole weight in it. Wrap around your tree. Lean out as far as you can. Push it further than you would in a real situation to be comfortable with regular usage. Just spend time in it, thats the only way to get comfortable. Also, nothing says you have to be 20 feet up, if you are comfortable with 12, so be it. Put a young kiddo in mine recently. Had all the shaking knees. 20 minutes later he was shooting a bow from it haha. My two cents.
