You need something to aim with to get good top stitching and good French seams. The inside edge of my presser foot is what I aim with. If I maintain that aiming point along the seam line, I get a nice stitch line 1/4" away from the seam line. You also have to remember that nobody will be looking at the stitching from as close up as you are while you're sewing it. The more comfortable you get with the machine, the easier it will become.
No one lives forever, the trick is creating something that will.