You're a professional brick layer. We all are. We spend our days adding bricks to the wall that separates us from God. Most Christians call that wall sin. Call it what you will, it's built to separate us from any sort of relationship with God-the-Father. And we would've got away with finishing the wall if it hadn't been for that Jesus character.
He came, He gave Himself up and tore down all the walls we had built (and will try to build) between us and the love of God. That's what 1 Timothy 2:5 means - Jesus is the one that stands alongside humankind and God the Father at the same time. He communicates across the gap between us and God, and makes things right - He even prays on our behalf (see John 17 for details).
When Jesus said 'No one comes to the Father except through Me' (John 14:6 NIV), that's exactly what He meant. No one can kneel, stand, sing, whisper, cry or anything before God if they don't go to and through Jesus first. He fought and died for our right to be on good terms with God. And that's the absolutely vital importance of Jesus in Christianity. If it wasn't for The Master-Plan of His sacrifice, we'd have no place before God. We'd have no Heaven to look forward to. We'd have, well, a very dark eternal future.
So what now? Think about a particular wall (sin) that you have been building between you and God. Give it to Jesus, stand back and ask Him to demolish the wall and to open the way to your Father.
Soulfood : Heb 11:23-28, Ex 3, Ex 33:7-23, Ex 34:29-35