You may have been in the same career for a long time but feel that you are already for a change. Often as people get older they are more reluctant to change jobs often because they have more commitments so may find that they simply cannot afford to have the time off work to retrain for something else or that they have children that they need to fit their daily schedule around
If this is the case, then all is not lost. You can still look to study in the evenings or find a job that will allow you to train whilst earning such as an apprenticeship. You may be entitled to help with childcare costs and often once you are through the initial training you can earn a lot more money and might be able to be more flexible with your working hours. If you feel that you need to gain more experience before applying for a new job, then you could try doing some volunteer work in that industry first. This can look great on a CV and also allow you to experience what the job may entail and what the industry is like before you decide to make the switch.