I encounter a lot of resistance in myself when doing activities where I won't see any real impact for a while (even thought I know it will benefit me long term). Some examples are: promoting a new venture, practicing guitar, exercise etc.
I'm trying to think more strategically about overcoming this kind of resistance. It's not a question of GTD practicalities (I've got appropriate reminders etc), it's more a motivation question for me. The two tricks that I've found most helpful are:
1. to try and give myself as much data to use as feedback about the process, even though no "outcome" will arrive for some time. For example, tracking my own sales activity helped me overcome the resistance to selling.
2. Committing myself to others as a motivation. For example, I really felt motivated to practice guitar more when I agreed to start gigging!
I'd be interested to hear others' experiences of meeting internal resistance... How do you overcome it?