These things I have spoken unto you, that in me ye might have peace. In the world ye shall have tribulation: but be of good cheer; I have overcome the world.
These very words were the words used by Jesus to comfort His disciples. Are you not comforted to hear these words? We may not be of peace today but God has promised us something great - PEACE. We all know that peace starts in our home. Now, the peace that God offers is different from what the world offers as it says in the Bible (Peace I leave with you, my peace I give unto you: not as the world giveth, give I unto you. Let not your heart be troubled, neither let it be afraid. - John 14:27). I have already taught this to our young people group (John 14:27) or about the peace that God offers. Think of this situation:
As a child, you accidentally broke your Mom's favorite glass jar. Using your earned money from school allowances, you try to hide what you did and buy a new glass jar of the same kind and color while hiding the evidence of the accident. You managed to fool your Mom but still you are afraid if your mom ever finds out about the accident. The fact that you were able to fool everyone by replacing the broken jar with a new one never really gave you peace.
Here is a true example of God's peace. You accept your mistake and went to your mom and ask for forgiveness. Your mom who truly loves you forgives whatever is done. Without even spending a dime or replacing the glass jar and fooling everyone specially your mom, you achieved peace. There may be guilt in your heart but the feeling of having been forgiven is something really great.
We may also notice that this verse also proves that Jesus did not promise us good things all the time, He said we shall have tribulation in this world but we should not worry. So, what Jesus wants us to know is, let us rejoice for He has overcome the world. Have a peace of mind - God loves you.