It's almost natural to walk into a gym and immediately look around to see who's working out today, who's hitting those high reps, or who needs to work on cardio more. Then our immediate thoughts might turn into, "Why can't I lift that much," or "Why don't I look skinny yet?"
Comparing ourselves to others will rob you of your positive mindset and suck the life right out of you. Do you really want to give those around you that much power over your emotions?
The hours you spend measuring our own life against that of others is time that would be better spent being grateful for what you do have, or even working to achieve the goals you've set for yourself. This, of course, is very hard in an age of social media when we can hop on our phones and see all the #gymtime and #gymselfies that are flooding our feeds.
What is the best way you can change these thoughts of comparisons? Be grateful for where you are at and what you have. The only person you should try to be better than is the person you were yesterday.