A LifeTheme is EXACTLY what you need to identify meaningful goals and find the motivation to accomplish them.
A LifeTheme is a personal mission statement that encapsulates what your life is all about, is used to create motivation to follow through on the things that are important, and is a filtering mechanism for removing the things that aren't.
If you don't have a LifeTheme, you'll be amazed at how much clarity and motivation it can provide - and the consistent progress toward your ideal future that it can deliver as a result.