Besides for those "travels" varying one from the other - each of them challenging the person on a different front - one also has to rise through his challenges so that every one of them lifts him to a higher level.
Kabbalistically, our world is known as the Olam Hatikun, the world of rectification. The implication of this to our lives is that we must always seek to rectify that which we have not done correctly before. This not only includes repenting from bad ways, but also the continuous search to better our existing service to Hashem.
Chazal tell us that wherever the Torah uses the word "אלה," it rejects what preceded it; when "ואלה" is used, it adds to what preceded it. This week's parshah begins with the words אלה מסעי בני־ישראל, indicating that in the journey through life, a Yid should always "reject what preceded." This means, one may never be satisfied with his current state; rather, he must strive to reach ever higher.
