Well, here we are! Down to the last letter in the acronym. Let's review....
S - Specific
M - Measurable
A - Achievable
R - Realistic or Relevant
Ya, timely! Set a timeframe for it. Otherwise, you might find other things to do instead of working towards your goal. Do you want that $50K monthly within a year's time or just, you know, when it happens it happens?
Your brain needs a timeframe. It gets your rear into gear.
Now that you've got all the letters and their explanations, post those goals here! I fully support you in your quest to reach those goals, so they are safe here. :)