The phrase "going downhill" usually implies a negative trend or decline in someone or something's performance and success. However, there are plenty of antonyms of the phrase that can convey the opposite feeling of progress and upward momentum. Synonyms such as "improving," "progressing," "developing," "thriving," "escalating," and "flourishing" are all alternatives to "going downhill." These words illustrate the idea of growth, advancement, and success, showing a shift from a negative to a positive mindset. Using these antonyms can help people to focus on the potential for positive change and set the tone for a brighter future.