If you haven't read Life Without Limits by Nick Vujicic, then Your Life Without Limits is a very condensed version. It is encouraging, but lacks the stories and humor of the longer version of his first book. This one is perfect for people on the go, or with short attention spans, who don't like to read full-length books.
If you are an avid reader, then I recommend Life Without Limits over Your Life Without Limits. However, this one is a quick, easy read for people looking for an abbreviated version. It's full of supportive inspiration, but devoid of most of the personal accounts given in his first book.