progress 前进，使发展
awaken 唤醒，觉醒
work through 解决，渐渐通过
negative 消极的，负面的
generate 形成
Most people seem to have more bad dreams early in the night, progressing toward happier ones before awakening, suggesting that they are working through negative feelings generated during the day.
大多数的人，似乎在夜晚早些时候，更多去做一些噩梦，然后在快醒来之前，渐渐做一些开心的梦，这就表明了，他们正在经历了消除白天的负面情绪
从句：that they are working through negative feelings generated during the day（宾语从句）
visualize 设想，想象
instead 替代，换种方式
occur 发生
wake up 醒来，清醒
course 进程
Visualize how you would like it to end instead; the next time it occurs, try to wake up just enough to control its course.
想象一下，如何换一种方式来结束，下一次他再发生的时候，你试着清醒过来，一至于能够控制进程。
从句1：how you would like it to end instead（宾语从句）
从句2：the next time it occurs（时间状语从句）
