Maybe this article will give you more information on that. http://mgvillarroel.wordpress.com/2014/01/23/motivation-and-rewards-when-learning-a-language/ I hope it helps.

I find myself using books or courses as I study a language and the sections/chapters end up becoming goals for me. Right now my goal is based on the chapter on using future tense in hindi, so I am shooting for being able to read and write (and hopefully speak) future tense sentences as my short-term goal. Another goal for me is be being able to use all the pronouns from memory (I still mix them up quite a bit. These are goals that I should be able to accomplish after a few good study sessions. I think each person encounters areas of weakness in a language and those are good spots to make some short term goals in.