Getting through Act I is easy. Most movies can hold your attention for 30 minutes but then the tough sledding starts. Act II is sixty pages or sixty minutes on the screen. Act II in careers is usually the twenty years between the first five years of your career and the last ten when you're going down hill.
Act II in a project at work is also the hard part when you are trying to get the stupid thing off the ground.
So think of your career or work project as Act II. It is where people lose interest and lose their way unless you pay attention.
The most interesting thing James Hart said at the screenwriting seminar (at least the most interesting to me) was that most screenwriters don't think Act II even needs to be there so they try to get through it as quick as possible. Whether it is a screenplay, career or project at work; Act II is the long desert to be crossed.
The four parts are
1) Progress and then setback,
2) Top of the mountain where one has a glimpse of success,
3) Point of no return, followed closely by
4) The plan falls apart.
And all this takes 60 pages. Or most of the time you have to finish a project. Or the middle section of your career.
As with any struggle, the secret to winning the stuggle is to confront the parts, break them down into manageable bits and keep failures to a minimum.
Shakespeare said (this is getting a bit deep when I quote Shakespeare) that all of life is but a stage. We may not be action heroes but the movies do give clues and examples of success in life--rent Wedding Crashers as an example.