Contemporary English Version (CEV)
Everyone drives a little differently. Some people drive slowly and conservatively, while others drive more quickly. Some people pay no attention to what they're doing, while others pay so much attention to their phone that the cars around them are an afterthought. There are some basic rules we all try and observe, but our interpretation is a bit different.
In the Christian life, we're all tackling the details differently. Some of us are more withdrawn from the world around us, while others engage a bit more, believing they can be a good influence.
What the preacher in Hebrews is trying to tell us is that there are some ambiguous parts of faith because of the nature of believing in something we cannot touch or see. We're trying to grasp the ineffable, and God doesn't fit in our minds. (If we could easily explain or grasp God, would he be worthy of our worship?) It's a challenge, but we emerge into each new day with the chance to seek God and to live a life that pursues God, trusting in the ultimate goodness of God and believing that the highest and best use of our life is for his glory, not our own.