The most important person you should compare yourself to is, well, you! The best way to gauge your progress and your physique is by constantly comparing your current body to the one you had when you started.
Often, people get into the mentality that, no matter what, their body is ugly. Don’t get mired in negativity. You need to continually challenge yourself, but also take time to appreciate how far you’ve come.
While it’s nice to desire a celebrity body, the biggest indicator of your success is always your own physique. There’s nothing wrong with using other people as inspiration to achieve your goals.
In the end, however, it boils down to you honestly assessing where you were, where you are now, and where you’d like to be.
Success is never determined by how you measure up against others, but by how your current self measures up to your past one. Compare, and be successful!