SMART Goals

Your goals should be S.M.A.R.T.

S-Specific
M-Measurable
A-Attainable
R-Realistic
T-Timely

Here is another strategy to use for the R. Rather than set a realistic goal set 3 goals.

A Minimum Goal-Something you know you can achieve based on your prior history.
A Target Goal-Something you know you have the ability to achieve.
and an Outrageous Objective-Something that is out there and would be a great accomplishment to achieve.

This is MTO Goal Setting technique is taken from Raymond Aaron's Double Your Income Doing What You Love. (John Wiley & Sons. 2007)