This was all because I knew how hard you worked and I looked up to you. Thank you for everything that you do.
Thank you for believing in me. Your thoughtfulness and generosity empower me and encourage me to do my best, always. Thanks for all your support and advice. In case you wish to send a note in hard copy, choose a card or a clean sheet of paper.
Thank you again for your understanding. We are proud to be led by a boss, mentor and manager like you. I am honored to have you as my boss.