专家表示，最大的变数是老年人对自己目前工作的感受。
The biggest variable, experts say, is how you feel about your current job.
对不可变数据的更改包括构建数据新版本并从新版本开始工作。
Modifying immutable data consists of building a new version of the data and working from the new version.
从写下来到设计再到实施指导，每一步都有可能产生极大的变数，因此，把你经常做的不同类别的工作进行一个规划是很有帮助的。
This will vary dramatically from writing to design to coaching, so having a map of the different types of work you do regularly is helpful.
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