This resonates with me a lot, being at the "burnout" stage of trying to achieve organisational change from below. Although I'm not really sure what I could have done differently, given the immediate problem seemed to be that my line manager was too busy to see me outside a 1-hour-a-week status meeting with others.

The linked article http://donellameadows.org/archives/leverage-points-places-to... is absolutely fantastic.