Many of us do not really enjoy our work. Often we will say that we only go because we need to earn the money but enjoying your job can not only make your day to day life more pleasant but can make you more proactive at work and also improve your overall quality of life. We spend a large percentage of our life at work, so finding a job that you really enjoy is not only a bonus, but I believe essential. It may be that you have to take a job that you do not have an interest in as you need work quickly or whilst you are training for another career.
Job satisfaction can be obtained in several ways. It may be that you get satisfaction out of fixing or repairing something or that you enjoy talking to customers and helping them make a choice about a product they need. If you do not currently enjoy your job, make a list of reasons why. If the list contains many elements that you cannot change then it may be time for a new career or at least a different employer.