You were running beautifully! Who was it that cut into your way and kept you from obeying the truth? (Gal 5:7 WmsNT)
Therefore, as we have so vast a crowd of spectators in the grandstands, let us throw off every impediment and the sin that easily entangles our feet, and run with endurance the race for which we are entered, keeping our eyes on Jesus, the perfect leader and example of faith, who, instead of the joy which lay before Him, endured the cross with no regard for its shame, and since has taken His seat at the right hand of the throne of God. Yes, to keep from growing weary and fainthearted, just think of the examples set by Him who has endured so great opposition aimed at Him by sinful men! (Heb 12:1-3 WmsNT)Often it's relatively easy to start the Christian life well; it's ending well that's more difficult. We get tired. People wear us out with their sin, their fickleness, their opposition, their junk. Sometimes it seems doing good in a world of compromise is exhausting. We cramp up as the lactic acid of the world's allurements build in our spiritual muscles.
To keep ourselves on track the Bible teaches us to keep "looking to Jesus, the founder and perfecter of our faith" (Heb 12.2a ESV). The word translated "founder" is ἀρχηγός and it can mean pioneer or trailblazer. Christ is the Daniel Boone of the Way to Heaven, he is our captain who we follow to our heavenly Home. As the refrain of the song Turn Your Eyes Upon Jesus goes:
Turn your eyes upon Jesus,Amen.
Look full in His wonderful face,
And the things of earth will grow strangely dim,
In the light of His glory and grace.