Bodybuilding is a marathon, not a sprint. It can be difficult to accurately determine if you’re making visual progress day-to-day or even week-to-week. Taking physique progress photos every 4-6 weeks and comparing them side by side is a good way to detect visual differences that you simply wouldn’t notice in the mirror. But ultimately, because of the relationship between strength gain and muscle gain, the main metric I want you to use for tracking your progress is strength. If you’re getting stronger, you’re progressing. It is strongly recommended to log every workout either in writing (print the program out or use a separate notebook) or in an app, so you don’t have to rely on memory to keep track of personal strength records. Taking body measurements a few times a year can also be helpful (arms, thigh, waist, neck) but simply focusing on steady strength progression will be your best proxy for determining muscular progress.