Positive virtue and subtle siddhis that are good are meek. They do not announce themselves. People who embody these spiritual traits wish no harm on others. The *strength* we see in a cultivator, such as mental or physical siddhis from a powerful qigong (or other) teacher, can be bothersome and irritating to the mind and soul.
Once we have made an energetic connection with another, the mind can easily connect with that energy with any thought of that person. I know the difficulty in breaking these connections. In time, with a refocused mind, one can be free.
Some good suggestions have been made herein. Please know that you don’t need another teacher’s mantra. Sunlight, fresh air, nature, pets, family, gentle exercise, any of your favorite (positive) activities. Above all else, try the simple act of connecting to yourself or your north star.
What you say to your teacher is less important than what you positively do for yourself.