What kind of fruit are we producing? By looking at the roots we have put down, we should be able to tell what kind of fruit we're likely to produce. If the tree's roots are good, the fruit will be good too.
We can choose. We can choose to be down, defeated, despondent. Or, we can choose to be full of joy. If we choose the latter, no matter the circumstances - and they may be awful, life can be sweet!