Avoid any tendency to become nonchalant and take things for granted. Do not criticize the company or anyone in it. Even in the best of times, employers do not like complainers or those who appear to have dissident views or difficulties getting along on the job, especially from a new hire. However, this is a very unwise course of action during the early stages of a new job. It is best to adopt the attitude that the employer is always right, and keep your opinions to yourself.
Agreeable employees stay.
You can always express opinions privately outside the company, but even then, caution needs to be exercised. Negative comments often have a way of getting back to quarters where you would rather not have them repeated. Finally, one of the best ways to increase security at a new job is to be there when you are needed. You may not consider attendance as an important factor, but it is to most employers. Frequent absences for personal reasons or minor illnesses are not going to sit well with senior management, which is routinely accustomed to putting in long hours at work in today's super-heated business environment.