S. Always work on a project that is very clearly defined or specified.
M. Make sure that you understand what you need to achieve so that you can measure your progress.
A. Never work on projects where the outcome cannot be attained or achieved.
R. Is the project realistic. Is it relevant to the overall business? Are the proper resources assigned to this project.
T. Have you set a time limit or schedule for completion of the project.
If you have done all of the above, then you are working SMART.