If you are fed up in your current job and looking for a change then you may find that you have to return to education in order to obtain the qualifications you need to get in to a position you want to be in. This may be taking on an apprenticeship job or going back in to full time education at college or university. If you cannot afford to stop working and need to study at the same time then you may find a weekend or evening course more suited to you or even taking a course online that you can complete from your own home.
Furthering yourself in education has many benefits and employers often like to see people that are willing to go on courses and continue to learn in their own time.
You may find that you have to fund the course yourself, but if you can afford to do this then you will often reap the benefits of being able to obtain a higher paid job afterwards.