When you meditate you can receive information through your senses. Sometimes visually or audibly or other senses. A journey uses visualization but it incorporates all the senses. If you are starting to meditate don’t try to deal with any major problems to begin with. Use your imagination. Laugh a little too is one thing I have heard. Don’t try to be too serious to begin with. Learn to play with it before working with it. Even a child grows into an adult so approach it as a child to begin with.