Simplify the project so that team members can focus on the 20-percent of activities that will generate 80-percent of the overall value.
Once that 80-percent value threshold has been achieved, evaluate whether the time spent attaining the remaining 20-percent added value is worth it. If not, end the project at that point.
Allocate more time to detailed planning than to execution. You’ll find that 80-percent of the problems will arise in the design phase, and they will be easier to correct sooner rather than later.
Keep in mind 20-percent of the problems will cause 80-percent of the cost overruns.