Yes, you are being selfish. Simple. AIBU solved.
The more complex (tough love, but trying to be sympathetic) answer is that I think it is SUCH a pity that some women feel that the only way to develop their confidence is by cosmetic surgery, or losing weight, or something to do with their looks.
If you change the way you look you'll still be the same person inside.
Far far far far better to develop self-confidence from the inside: by learning new knowledge, or developing new skills, doing some volunteering work to improve others lives, or taking up a satisfying creative pursuit.
So think about what else you could spend £2,000 on: a WEA course to start learning a language; yoga sessions or piano lessons; an interesting holiday somewhere with good art galleries.
Feed your mind and your soul, not cut away bits of your body.
And by the way, do you know what a toll a general anaesthetic takes on your body? Why anyone would have one unnecessarily is beyond me.