Quilting, for me, is a hobby. if it's not enjoyable, its not worth it. If i have a quilt that has a very special intention for a speical person that I "need" to have perfect seams, perfect points, etc, then i typically will simultaneously be working on piecing a part of a scrappy crumb quilt that intentionally has no matching seams and size doesn't matter. it's my way to balance my brain and not go crazy! If everything had to line up right all the time, quilting would lose it's enjoyment.
It's also important to note, nobody notices mistakes like we do on our own quilts. (I don't make quilts for other quilters! ...they would know!). the receiver tends to look at it as a whole and is not analyzing every stitch length, seam allowance, or corner point. Don't be too critical. Have your standards and goals, but just enjoy the process!