To tackle highly challenging goals that you deem reachable, i suggest that u do the following:
- understand the turf. Look at the historical record, talk to insiders and read about where things are headed
- prepare to commit urself on a level u might not have considered
- check ur time horizon. is the goal challenging but reachable within the time limit u've given urself?
- identify crucial resources. who else or what else do u need to make this goal a reality?