This statement Is as simple as it is. No hidden proverbs under it. If your yesterday still looks big then you've not but in much work today. Each day is a new opportunity given to us by the creator, new opportunity to achieve that which we still plan to and attaining that height we want to get to. There should be a thing of joy to look back to daily but the future should hold better than the past.
We sang this song while growing up. Good better best, I shall never rest until my good is better and my better best. This should be our daily agender, making our good better and out better best. Stay positive, work hard and don't give up. Surround yourself with genuine people who can help you attain your dreams.
We all live under the same sky, but we don't all have the same horizon. Those who wants to be Leaders always see a bigger picture. Expanding your horizons means being able to see the GREATER things when nobody does. You did something great yesterday, try and do something greater today and each day u keep hitting and smashing records. Our yesterday should be a good place to reflect to but out tomorrow should be a better place we are heading to.
Let your yesterday be jealous of your today. Put in more work, put in more work, after all the effort, it takes like a minute and it happens, you're on the top. If you're wishing you were still in your yesterday, then you have a lot of work to put in.