No, should not give up his current job to start a new business. Starting a new business is always challenging and the best advice is that you do not quit your current job to develop it. Should actually behave like having two jobs, one current and another that will focus on developing their new business idea. That obviously be reduced or abolished by free time or break that use it might have had but it is the safest way because no one can guarantee the success of your business idea. Doing this will help to prove himself if done for business.
People often prefer to work to take the challenge of carrying out a business project. In the process will not spoil the relationship with their current employer because it must eventually turn to him in a situation of need. Depending on the nature of your business idea, keep in mind that your current workplace may be part of the network you need to develop their new business idea (can be your potential customers). So be very careful in maintaining the quality of their work and avoid using the resources of his current workplace to develop their new business idea, that you can tie your present status and may lose his job when he was not ready to quit.


