Whether you’re leaving due to a fabulous offer elsewhere, or because you can’t stand your boss, it is wise to maintain a high level of professionalism.
While you might wish to tell your current employer everything you hated about your job and your colleagues, the business environment suggests you take caution. Your old boss might become a new client, and your client might become your boss. Industry professionals talk and you don’t want your reputation soiled because you let your instincts and emotions overtake you.
Avoid the bridge-burning temptation and ensure a smooth transition and strong future professional reference:
Prepare your resignation in writing and deliver it in person. Nothing beats a face to face discussion. Your letter and notes will help you deliver honest, yet positive messages to your boss. Cite the positive things you learned from the company and from colleagues. Express your appreciation at the opportunities given.