Hashem instructed Moshe to build the mishkan in a certain way, each part of the Mishkan was built according to Hashem. Moshe built the mishkan and took it a part for seven days only on the 8th day did Moshe let the Mishkan stand. This seems strange, why would Moshe put himself through so much trouble? Everytime Moshe went through the process of erecting and dismantling, he invested us with the strength to rebuild ourselves to learn from our failures and reinvent ourselves so that we might reach our spiritual potential. Moshe Rabbenu taught us a very important lesson that failures can be converted into growth and weaknesses can be transformed into strengths, and that's what life's challenges are all about. Our Torah is a perfect instruction manual which addresses every detail in our lives, and we follow it. Building the Mishkan within ourselves assures our Jewish survival and fulfillment.