Spend some time sharpening your awl blade and you wont have to use so much force on it. The edges and tip of the awl should be knife sharp and the flat sides should be mirror polished. Once it is sharpened properly, strop it every time you use it and it will stay sharp. As Workingmanleather stated, a stitching groover will improve the look of the stitching as well as an over stitch wheel to mark out the hole spacing. The Art of Hand Sewing Leather by Al Stohlman explains it well.
Happy stitching!