Yep. I have all the same problems as at one time or another. I've learned to accept the fact that I am not a perfect quilter. I've learn to work around my inability to have perfect points, seams, etc. I've been quilting 40 years now and the only times I've made a precise quilt is when I hand stitch. There are so many gorgeous quilts at quilt shows and I envy the skills of the people who created them. I really admire the skills of all the fantastic quilters I've met on this Board and enjoy seeing the quilts that are so wonderful and perfect that I drool over them...but I not longer put pressure on myself to achieve that level.
Just remember that "practice makes perfect" and you can achieve your goals!