We all have our own ways of showing our life to others. Artists use brushes, musicians use songs and writers use stories. Spencer Johnson's book Who Moved My Cheese? shows changes exist（存在）in our life. Life changes and so do we. We must change ourselves to face the changing life, or we will fail.
Just look at the cycle（循环） of the seasons. Trees bud（发芽） in spring and in summer their leaves turn green. In autumn, their leaves start to fall onto the ground. When winter arrives, there are no leaves on trees. Next spring the cycle begins again. We know there are cycles in nature, so we can prepare for（为……做准备） them. There are cycles in nature, so there are also changes in our life.
We can enjoy the moments when things are going well and get away from the bad ones. We can take the changes in our life as chances（机会）. As we keep changing ourselves, we can keep up with the changes in our life.
