Fear God and keep His commandments,
For this is man’s all.
For God will bring every work into judgment,
Including every secret thing,
Whether good or evil.

Ecclesiastes 12:13,14

King Solomon the Bible tells us was the wisest person ever lived on the earth. If he were to make such a conclusive statement, then there has to be some truth in it. 

King Solomon had searched high and low to find meaning in life and eventually understood that everything is vain or meaningless. Yet he acknowledged that the only thing that makes this life worth living is the fear or reverence we should have for our God. Knowing that our every action will be brought to light in plain sight at the judgement, should hold us accountable and on the right path. 

Is it hard to revere God? I don't think so, as the Holy Spirit in us makes it easy and natural, does He not?

O Israel, what does the LORD your God ask of you but to fear the LORD your God by walking in all His ways, to love Him, to serve the LORD your God with all your heart and with all your soul. Deuteronomy 10:12