Seeing the glorified Jesus will be overwhelming but I do not need to be afraid.
Revelation 1:17-18 When I saw him, I fell at his feet as if I were dead. But he laid his right hand on me and said, “Don’t be afraid! I am the First and the Last. 18 I am the living one. I died, but look—I am alive forever and ever! And I hold the keys of death and the grave."
When we think of seeing Jesus in heaven we usually think about the human Jesus that walked among the people and looked just like any other guy but if you study the book of Revelation you will realize that the Jesus that we look forward to seeing isn't going to look the same.
When John saw Jesus in the vision he didn't see a humble carpenter, he didn't look upon a familiar face and have an out burst of joy as we would when we see an old friend, John saw someone that was much different from the man that he knew.
Jesus is now in full glory, the glory that he has always shared with God, the Jesus that John saw in the vision struck him with fear and dread. John is overwhelmed by the holiness of God. John was instantly aware of his sinfulness and his depraved condition and was totally devastated. His immediate reaction is to fall down to the ground like a dead man. (Philippians 2:6-11)
John's reaction was fear but then Jesus reacted to John's fear with assurance.
It was proper for John to react the way that he did but Jesus didn't want John to continue forever in fear, Jesus touched John and told him to "fear not!" This is similar to what Jesus said in Matthew 17:5-7 when the disciples witnessed the transfiguration.
John receives a touch from Jesus and an assurance that he doesn't need to be afraid. Jesus loves him and went to great lengths so that John could stand before Jesus without fear. Since Jesus is on our side and he will never die we don't have any reason to be afraid.
2 Corinthians 3:16-18 But whenever someone turns to the Lord, the veil is taken away. 17 For the Lord is the Spirit, and wherever the Spirit of the Lord is, there is freedom.When we see God's glory contrasted with our sinfulness it will cause us to live differently. If we get close to God through studying his word and we see who he is then we will come to understand our situation without Jesus work on the cross. We will allow God to work in our lives and change us "into His glorious image."
18 So all of us who have had that veil removed can see and reflect the glory of the Lord. And the Lord--who is the Spirit--makes us more and more like Him as we are changed into His glorious image.
A true Christ follower should be repulsed by their sinfulness, we should desire sin less and less as we get to know and see Jesus more, sin will look a lost less appealing to us and that will cause us to be a better reflection of God's glory.
Revelation 6:15-17 Then everyone--the kings of the earth, the rulers, the generals, the wealthy, the powerful, and every slave and free person--all hid themselves in the caves and among the rocks of the mountains. 16 And they cried to the mountains and the rocks, "Fall on us and hide us from the face of the One who sits on the throne and from the wrath of the Lamb. 17 For the great day of their wrath has come, and who is able to survive?"
We will all see what John saw and we will probably all fall down like a dead man! If you have a relationship with Jesus then you will not have to fear the appointment that we will all be forced to keep.