Providing examples of exemplary and acceptable work along with grading rubrics can also be a big help in making learning objectives more obvious. Learners can become frustrated when taking on learning tasks without the required prerequisites in place. Be sure that the prerequisites for your instruction are clear. An entry level test can often help learners determine whether or not they are qualified to enroll in a course that is built on prerequisite knowledge and skills.
Every journey begins with a single step.
The process of learning is no different. Learners will be more motivated to continue if small successes are experienced along the way. Start with a simple, but challenging lesson, and continue with lessons that are increasingly more difficult. Each successive lesson can be made more challenging by building on the knowledge and skills aquired in the previous one. Remember, small successes along with increasing levels of difficulty will build learner confidence and keep the learners engaged.