Its good to train, but it is not easy for everyone! For certain people, it is second nature, and, for others, it is a real burden. You just have to find your comfort zone.
First, it is best to set objectives and targets which will motivate you to train in order to achieve your goal.
Second, choose a type of training you like. For some people, training as part of a sports team or participating in athletic games is most appealing.
Also, some people hate to train because it just looks lonely! On the contrary, keeping fit does not have to be a solo endeavour; find yourself a partner. This will make training easier and will help the time fly by. You can even compete with your friends. This will keep you motivated and on track.
Finally, remember that one of the main reasons to stay motivated and diligent during your training is that, in the long term, this is the best thing you can do for your health and your physical appearance.
The important thing is to try several methods and to find the one that motivates you the most.