hi thanks for choosing healthcare magic Psychological anxiety never lead to cyst formation. It could cause increase heart rate, chest pain or tingling sensation. if u r feeling a cyst in ur chest, then it may be something else. Most changes in breast tissue or breast lumps are not cancer. Painful breasts, cysts, fibroadenomas, radial scars, microcalcifications and other conditions are usually not cancerous, although some may indicate cancer. Breast x-rays or mammograms often detect changes other than breast cancer. All breast changes should be reported to a doctor. thanks