The phrase "bad patch" often refers to a difficult or challenging period of time in one's life. There are a number of synonyms for this phrase, including "rough patch," "tough time," "hard period," "difficult phase," and "trying stretch." These terms all convey a sense of struggle or challenge, but they may have slightly different connotations depending on the context. For example, "rough patch" may be used to describe a short-term difficulty, while "difficult phase" may suggest a more prolonged struggle. Regardless of the term used, it is important to remember that everyone goes through difficult times, and there are resources and support available to help navigate these challenges.