Can you assess me as for my suitability to become an A.D.I ?
It is true that not everyone is suitable for either the training, or the lifestyle afterwards
For the answer to this question really you need to go through two processes. I am not really the person to help you with either.
The lifestyle choice is all yours. Instructors work long hours at all times of day and quite often all days of the week. You will never have a fixed working pattern again and people will let you down all of the time. Get used to it now!
For the question of suitability to training you are going to need professional guidance. Find an instructor trainer in your area. Make contact and see if they hve a spare hour to assess your driving and talk to you about the training and the job afterwards. This initial hour can be an invaluable insight into the job.