If you have worked in a particular industry for a number of years you may have considered running training courses for other people wishing to get into the industry. You will probably be in a great place to offer training as often hands on experience is perfect when it comes to teaching others. You may need to obtain some sort of qualification to allow you to train others, depending on what role you are going for. Certain industries require you to have a recognised teaching qualification to allow you to train others, this may require you returning to university or college which may mean that you are out of work for a time. This can have a massive impact on your financial situation and should be considered in detail before going forward. Often dropping down in salary is necessary to allow you to go forward.
Becoming a trainer can not only be a very rewarding job but can also be quite well paid. It is always worth speaking to other trainers in that industry to see what the job role is like and t try and gage if it is for you. Often being able to share your knowledge and experience with others will really give you a high level of job satisfaction.