First, it is important that you have self-confidence in your ability regarding the job you have probably been waiting for. To illustrate, ever so often people feel lousy at some sort of work that is not compatible with their abilities. In this case, career change may seem not only necessary but also inevitable. Further, suppose you do not feel yourself growing in your work and your life broadening and deepening at the same time, it means you have not found the right place in which you could develop your potential.
Under these circumstances, you might sense anything but happy, perhaps having neither job satisfaction nor job security in the workplace. So it is time for you to switch to a new job, believing that nothing would change, should you not change in time.
Second, no less important is that you could work with passion in the new job because people rarely succeed unless they have fun in what they are doing. And, money being not the issue, this reason might be what makes you leave the job which you used to distaste. To put it simply, such career change is from one job which you 'have to do' to another job which you 'want to do'. Imagining that all life is a chance, you had better let go of the fear of abandoning the familiar; and, out of desire to succeed, you should risk to embrace the unknown.
Of course making a move in the new direction is easier said than done since the old job, even not at all enjoyable, is a memorable part of who you are. Indeed, the difficult part may be that career transition often involves such courage as initiated by passion, and is one off the unsetting experiences you would find in your life. Paychecks always being an important motivational factor that people work, what could also make a difference is that you may expect to see how far you could go and how much delight you could take in doing your new job. That is, to find out what you are fitted to do, and to secure an opportunity to do it, is the key to professional happiness.
All things considered, do you agree or disagree that life is too short for the wrong job?