Be very selective in the skill you're trying to masker to avoid sabotaging your success:
Make sure it's applicable: The perfect skill either solves a problem you have or scratches an itch you have.
Be very specific: Specific goals are easier to pursue than vague counterparts. To set yourself up, narrow your skill down as much as possible. Ask what specific problem are you trying to solve, and find out what aspects you find most fascinating.
Make sure you love the process, not just the outcome: Pick a skill where the road is as exciting as the outcome. Then plan out celebration points along the way.
That was my first thought when I finished my last exam in my Master's program. I had been learning for nearly 20 years, and I thought I was finally finished. I couldn't have been more wrong. We're constantly learning new skills from the moment we enter this world to the moment we leave.
"Our brains evolved to learn by doing things, not by hearing about them. This is one of the reasons that, for a lot of skills, it’s much better to spend about two thirds of your time testing yourself on it rather than absorbing it."
It can keep you accountable, but it can also lead to a false sense of completeness. One way to avoid sabotaging yourself is to state your goal as a commitment rather than progress towards the finished product.