So you are thinking of becoming a yoga instructor. First of all, you need to pat yourself on the back for thinking of a career that is so far outside of the mainstream. Too many people set their sights on becoming doctors or lawyers, and plenty more are perfectly fine with spending their entire lives focusing on a single trade such as becoming a plumber or an electrician. While there is nothing inherently wrong with any of these aforementioned jobs, suffice it to say that yoga instruction can be a much more fulfilling thing to commit yourself to!
With all that having been said, it should be mentioned that you will need some skills if you want to succeed as a yoga instructor. Simply attending Marianne Wells Yoga Retreat and going through the motions will not be enough if you are truly looking to excel, so it might be within your best interests to at least consider the various skills that you would need to perfect. One such skill would be physical fitness, since you would be hard pressed finding a job as an instructor of yoga if you are not capable of performing all of the complex poses all on your lonesome.
It might also behoove you to obtain a baseline level of understanding pertaining to people skills. After all, you might need to hold onto a large client base in order to earn a good living, and managing your relationships with these clients will likely end up taking priority over anything else. Focusing on these two areas will lead to you covering the majority of your bases for the most part, and you can look forward to a long and prosperous career as a yoga instructor.