It might be your thimble. Using the tip of your finger should work but if the thimble doesn't fit properly, or if there is not a deep enough indentation in the tip to keep the needle from sliding, it could be laborious. Too, like any new skill, it just takes some practice and getting used to. I suspect that, if you hang in there, you will find the method that works best for you. I use a hoop and quilt towards myself but I've seen people quilt beautifully by pushing the needle away from themselves using their thumb!