We justify our loss of focus with the excuse that God is invisible. You can’t see or hear him; it’s easier to trust in the world you can see and feel. But Peter had God visible, physical, tangible, right in front of him, and even that didn’t make the difference.
I believe that nearly everyone has had these thoughts once in their life. It is, after all, much easier to believe in things we see.
Many people think that God is invisible, like the wind. We can’t see the wind but we know its there because we see the effects of wind on something. We can feel the wind when it blows and we still believe even though we can’t see. But so many people try to rationalize that since they can’t see God then he isn’t real. But we can see the effects that God has and we can feel when He is moving. But the square one of this is that if you don’t believe in God then you won’t see the effects He caused and feel Him and believe that it is from Him. It all comes down to belief, and what you believe is all up to you.
Sometimes the part that’s hard to believe is the part you need to believe.