The reason that we should not scrutinize and compare one another's "works" is because we are bound by relationship with the Holy Spirit to only do what He instructs us to do. We can do no else than what He instructs. And to be sure, your life will not be boring, walking with the Living God.
Being attentive to the voice of the Holy Spirit will keep you busy enough, though much of the work the Holy Spirit leads you to do, is not normally seen of men. Yet, spiritual men see the work of the Holy Spirit in your life, while others may not.
It is not about adding up great works of doing good. The greatest work of the Holy Spirit in our lives is conforming us to the image of Christ.
Out of knowing the Lord, you will be doing the "true works" of God and bearing much fruit. But here again, there are different definitions of fruit amongst men, yet the Holy Spirit through Paul is very clear about what constitutes true fruit.
Doing "great things" for God and bearing much fruit can be very different indeed as the "men" in Matthew 7:20-23 found out.
The great exploits of the Saints are truly encouraging. I am no less encouraged when I see the image of Christ in a fellow Believer. They are both witnesses and encouragement for me to go deeper with God witnessing the great things that He does through those that have a single eye towards Him.
Pilgrim