Sometimes we roll without the benefit of knowing or seeing what is there. Try this. Stand and close your eyes. now have someone place a chair or something close to you so there is a reality of rolling into something and now roll. You may find that leading with your arms in a swiming motion (sweeping to the sides) works well. Another thing is that you will naturally protect your neck and head with your arms as you get up. And all of this out of your faithfull servant FEAR. Keep it in this position and it will be of great help.