Therefore, since we are surrounded by so great a cloud of witnesses, let us also lay aside every weight and the sin that clings so closely, and let us run with perseverance the race that is set before us, 2 looking to Jesus the pioneer and perfecter of our faith, who for the sake of the joy that was set before him endured the cross, disregarding its shame, and has taken his seat at the right hand of the throne of God.
3 Consider him who endured such hostility against himself from sinners, so that you may not grow weary or lose heart. 4 In your struggle against sin you have not yet resisted to the point of shedding your blood.
This passage speaks for itself. We don't grow weary or lose heart because He didn't do so on us.
The writer of Hebrews is basically saying, "If you haven't endured the humiliation, pain and blood of the cross...you really don't have it that bad. So buck up and keep your eyes on Jesus, who began your salvation and continues your sanctification.