Habbits are a bad thing. Automatic assumptions are the root of all evil. Challenge everything.
int i = 42;
Trace.WriteLine("The answer is " + i.ToString());
OR
Trace.WriteLine("The answer is " + i);
Could have saved myself:
const double TimeToPressKey = 0.3;
string wastedKeyStrokeString = ".ToString()";
int perDay = 25;
int workingDays = 5 * 48;
int years = 3;
double savings = TimeToPressKey * wastedKeyStrokeString.Length() * workingDays * years;
Or thereabouts.