I've been reading Sasha Daygame's recently released ebook "The Daygame Bible" and he does say that you really cannot succeed with women until you are okay with yourself...
This makes sense, I mean a guy who is depressed, has no hobbies, interests or friends, is overweight and unhealthy, and spends his time watching daytime TV... how is he going to fire himself up and be playful and funny with women, engage them on topics of mutual interest, be relatable and so forth? If he starts working on his fundamentals (fashion and fitness) then at least he has something he can relate with the typical girl on (because they're under societal pressure to be fit and have good fashion)... if he gets some friends he will at least have conversation practice and will be able to practice adding value to others' lives (perhaps by supporting his friends through difficult times, praising them, helping to organize outings, having good ideas, introducing them to each other and so forth)... if he gets some interests then he will have something to say when asked "what did you do this week?" or "what are you interested in?"... which would obviously help him at lot when he's on a date with a hot woman... if he does all this he probably won't be depressed anymore since his life will be so much more interesting and it will bring more of a sparkle to his eye and a "joy de vivre" which women pick up on... so I am certain he is gonna have a lot more success with women than if he just moped around being a slob and saying "oh hell, why can't I get laid?".
Having said all that, the above things are external, what really matters is you love yourself and enjoy life. This is basically a confidence thing and I speak from experience since I have some shame issues that held me back for a long time, unfortunately if you do not believe you are high value, then it will be difficult to convince women that you are high value. Note this has nothing to do with any external factors such as friends, hobbies, interests, fashion, fitness etc... you could have none of those but still have the firm belief that you are a special guy, perhaps because you have been treated that way all your life and received lots of love and attention and firm boundaries and guidance... unfortunately almost nobody in today's society is really free from that little voice in their head that says "you are not good enough", in most people that voice is so internalized that you are not consciously aware of it... basically every fat person you see or every internet/shopping/gambling/drinking/smoking/porn/sex addict, or anyone whose life is obviously out of balance, is someone who is not happy with themselves inside, and will constantly be subject to shame spirals (that voice in the head gets out of control and leads you to a binge or extended sickie or staying at home masturbating to porn or picking at your pimples etc). If this is you, then you're probably not ready to succeed consistently at pickup yet, but you still should be practicing every aspect of pickup whilst you get your shame issues handled and start learning to love and accept yourself.
Ray