“Truly, truly, I say to you, he who does not enter the sheepfold by the door but climbs in by another way, that man is a thief and a robber. 2 But he who enters by the door is the shepherd of the sheep. 3 To him the gatekeeper opens. The sheep hear his voice, and he calls his own sheep by name and leads them out. 4 When he has brought out all his own, he goes before them, and the sheep follow him, for they know his voice. 5 A stranger they will not follow, but they will flee from him, for they do not know the voice of strangers.” 6 This figure of speech Jesus used with them, but they did not understand what he was saying to them.John 10:1-6
The people, especially the leaders, would be familiar with the OT imagery of God himself coming as the shepherd in response to the sin of the other "shepherds". In the context of the blind man's healing in chapter 9 and the leaders' accusations of Jesus, Jesus uses that image - He is the true shepherd.
The shepherd comes in through the door. Others have to trick their way in. Jesus doesn't con or manipulate his sheep. He doesn't need to manufacture authority, he has it.
He calls his sheep and his sheep follow him. The good shepherd walks ahead of the flock and the sheep follow him because they trust him, they know he is good. The sheep flee from the voice of the others, more like the sheepdog herding the flock from one place to another by pushing them around.
Believe that Jesus is the good shepherd. Where he is leading you is the best place for you to follow. He is not forcing you to go somewhere that you wouldn't want to go if you, the sheep, could understand what the shepherd understands.