When we are afraid to change the current situation or contract those field we never touched?

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Today,I found myself is very timid.Whether love,or learning,or life,I'm afraid to change.As if I accustomed to the status quo,and I can't predict things going and I can't take the first step to change the situation,and I also can't take the step to contract the new thing.It's awful.Just like the «Who Moved My Cheese?» saying,we should anticipate change,adapt to change quickly,enjoy change,and ,be ready to change quickly.I know that's right.But I can't really do like this.I still afraid to come to the new field.What can I do?Do you have the same feeling?How to deal with it?