Remember that effective time management makes you more rather than less flexible. It allows you to do the things that you really want to do rather than the things you really have to do. Do not take personal development books as gospel. Read them and take whatever useful ideas you need. Some people feel they must do everything suggested and take the techniques to extremes.
Every book has at least one tool or strategy of benefit.
Take what you need and what works for you and discard what doesn't suit you. Become an adventurer. Revitalize your spirit and sense of playfulness. Become a kid again. Once every few months, plan to enjoy a new, thrilling activity such as white water rafting, scuba diving, windsurfing, rockclimbing, joining a martial arts club, sailing, deep sea fishing or camping.