looking for new career/job

 i am 38 and have only ever had two jobs one witch i am in right now still this will be my 13th year, now this is retail and can be ery challanging and i really feel that i need a change but have no idea at all what to do, i would like a job that is not really around to many people and i would like to beable to wear head phones when i need to  what sort of jobs are there for people with autism? i am in the Milton Keynes area if anyone can help, i am very very low right now and no a change is needed even though thats going to be a challange in its self