There are a lot of steps you can take to train yourself. If you are looking for a new career, this is often the best option as you will be taking control of your own progression. Look into ways that you can train for a new career and see if there are any courses you might be able to take.
One of the most obvious ways to begin a new career that requires different qualifications is to take a training course. You can find courses at a local adult learning college or online. Choose the option that works best for you and how you like to learn. If you need flexibility, online learning is probably the best option for you.
You can also look into qualifications within your existing career path. See if your employer can put you onto new courses. This may give you fewer option for moving career but you may find a career you love.