What are you doing? In education, do you have a degree?
Try joining agencies, they are a good bet.
Also search for waiter, picker, packer jobs on totaljobs, there are literally a myriad of those jobs in your area or surrounding areas.
To change your life:
1) Eat healthily-eat 5 serving of fruit a day, drink 8 glasses of water daily.
2) Get plenty of sleep, at least 8 hours
3) Work out at the gym, try the 5*5 workout
4) Have an ambition in life and work for it
5) Work on your confidence: Relax, respect yourself, accept yourself, work out, wear good clothes, feel good, focus on your passions, know you are a good person who treats people well, think positively, be proud of yourself, do things that make you happy, remember your happy times, what makes you confident? What are you proud of? Do you have a skill you are good at?
6) Have hobbies
7) Go out, meet people, join clubs based on your hobbies
8) Enjoy life, love life, relax, be positive, go out there and conquer and people will be attracted to you