why not work along side your masters? A part time job could do wonders for your confidence and self esteem, and the actual job itself doesn't have to matter. Having a routine, a purpose, having people rely on you.... all positives.There's plenty of great people who work in retail jobs, absolutely nothing wrong with them, I have met a lot of my friends through part time jobs. A lot of the still work in retail places full time, it's a great way of opening doors and meeting new people.
As for grad schemes, does anyone ever get the first one they apply for? It's something you should persevere with for sure, remember all the hard work it took you to get your degrees! I'm doing a masters now, so i know the work load is obscene haha.
Also, i would never judge your worth on other people around you! How do you know how happy they really are? Just because some people are having babies and married doesn't mean you have to be doing the same, life definitely isn't a race.
how boring would the world be if we all did the same thing??