Tanmay Vora looks at change, improvements, and belief in outcomes:
My gym instructor recently shared a very good insight. He observed that people who constantly focus on the pain when exercising give up sooner. He also noted that people who look for instant changes in their health after a few days of exercising also get disappointed soon.
That insight goes well with my own experience which suggests that all meaningful changes take time, demand persistent effort and are driven by strength of our belief that things will be better after a change is implemented, be it improving processes or getting in a better shape.