John 20:30 Jesus performed many other signs in the presence of his disciples, which are not recorded in this book.
When we look through the Gospels within the New Testament, we are amazed by the number of miracles and wonders Jesus did... and yet this apparently is a small sample of what He did!
If we can be encouraged by what we read, then just imagine the encouragement the disciples gained by watching Jesus do so much more.
Listen closely to what God is telling you through reading your bible, and have faith in knowing He can do so much more!