It's The Fruit that Counts

Hebrews 6:7-8 KJV

For the earth which drinketh in the rain that cometh oft upon it, and bringeth forth herbs meet for them by whom it is dressed, receiveth blessing from God:

But that which beareth thorns and briers is rejected, and is nigh unto cursing; whose end is to be burned.

The same earth has access to the same benefits. Yet the one piece of ground yields fruit and herbs and it receives the blessing of God. The other piece of earth yields thorns and briars and is rejected and burned.

There is no possibility of misinterpretation here; only that of our ignoring it. It is the fruit that determines the response of God. We are made of the same earth and we are all given the same opportunities for salvation. The difference is the yield. One produces fruit, the other produces thorns. The fruit (or rather, the ground that produced it) is blessed of God; the thorns (or rather, the ground that produced it) is rejected and burned.

There is no mention of the amount of yield. That ground that produces fruit may produce lesser or greater quantities. That is not in question. The only question is, is it fruit or thorns? That ground that produces thorns may yield greater or lesser quantities. That is not the question. The question is, is it fruit or thorns? 

The blessing of God does not go to the one with the biggest harvest

It goes to all who bears fruit for God.

The curse of God does not go only to those who are exceptionally terrible

It goes to all who receive God's grace but reject its life giving impact. They each produce thorns and briars of one degree or another and all will be rejected of God in the end.

Any piece of ground may produce fruit and herbs

It is merely the result of receiving God's grace as from God, and giving the ground to His care.