S - Specific; be as specific as you can about what it is you want to accomplish. It isn't "make a living" - it should be "make $10,000 per month' or "make $500,000 per year" or "make enough extra to pay for the BMW M-3 or Audi A8".

M - Measurable; you should be able to describe what you want to accomplish in terms of something you can measure. It isn't "use Social Media to get more exposure" - it should "use Social Media to get 50 Likes per day on Facebook".

A - Achievable; yes, many people will tell you to make your objectives challenging or a "stretch", but that doesn't mean set yourself up for failure. Make sure that with a reasonable amount of time, energy, effort, help or what ever you have available, you could actually accomplish the objective.

R - Relevant; as you tidy up your objective to comply with the first three items above, it is very easy to loose sight of what you are actually trying to accomplish and write down something that meets those criteria but doesn't express what you set out to accomplish. Double check to ensure that your objective is still relevant to what you want to accomplish.

T - Time constrained or limited; you need to make sure you express your objective with a Deadline. No, it doesn't have to be THE RIGHT deadline, but it should have a deadline so you can begin planning on accomplishing your objective by that time or recognize that you either need more time or more resources. Without a Deadline to motivate your actions you may not figure out you need that extra time or resources until it is too late.

The Lean Canvas approach to your business planning has helped hundreds of businesses otherwise struggling with their business plan, to finally understand what they are trying to accomplish. In reality the Lean Canvas helps people talk about their business model in terms  of:

How will you create value for you customers from their perspective?

How will you capture that value in the perception of your customers?

How can you convert the captured value into desirable value (like money!!)?

Once you can thoroughly explain, and only after you can thoroughly explain, your business model are you really ready to tackle developing and writing down your plan to implement your business mode.

There are additional articles and resources throughout this site to help you finally get control of you business plan.