But don't worry if you don't have a plan – some of the best careers are decided off the cuff.
When a new development in Scotland needed a new HVAC system it was decided that off-site manufacture of the plantroom would have particular benefits.
RhythMEK, it was decided, would show off its 12 dancers, who include the three founders and Desmond Richardson, Elizabeth Parkinson, Sarita Allen and Roger Bellamy.
To ensure coherence across these workshops, it was decided to start off with a training-of-trainers workshop, training the facilitators of the eight planned sectoral workshops.
At the time, the championship was decided by play-offs between the best teams after the end of the regular season; this arrangement was in place from 1982 until 1992.
That was decided when he saw off his rival, former Senator Bill Bradley of New Jersey, in the primaries.
It was decided that the cut off would be 50 years old considering many previously HIV-infection studies data as well as most significant immunological change take place around this age.
The bronze was decided by a jump-off, with Brazil beating out France.
Victory was decided in a dance-off between a pinstriped James Herring, of Taylor Herring, and Nicola Methven, TV editor of the Mirror.
The ninth and final place was decided by a play-off between four players.
