If it really bothers you, practice your knitting with some scrap yarn to get better with your tension. Relax and enjoy your knitting. We are our worst critics. There are no knitting police here.
Also, remember that outside of amateur blogs, most of the knitted pieces you see in the books, magazines, and web sites were done by master knitters. They have to pay big fees and have to know everything about knitting. They must learn several different ways to knit and they are judged by their perfect tension in order to get their certificates. So of course, their stitches will look perfect. The only way to match their perfection would be to become master knitters like them or to use a machine. Enjoy your knitting, eat chocolate, have a glass of wine, and relax.
The frustrations of trying to become a master knitter: