Set a time - If you do indeed have such a pill, keep your language-learning tools near your pill organizer, and extend that few seconds of prescribed medication into a few minutes of vocabulary review.
Start small - The biggest trick to habit-making is to make the habit small. Just a little bit a day. This is not a new concept. Take this Joy of Languages post about tiny habits.
Make a friend - This should be someone who directly or indirectly aids in your habit-forming journey. It could be a former classmate, a pen pal, or even an application like Duolingo.
Track Yourself - From now on, mark days where you did something related to your language. Every action, no matter how small, get an X on the record.
Teach a loved one - This sort of learning-by-teaching method is well-documented as an effective learning strategy, especially when the teacher must actively retrieve the memory of the topic.
Incorporate your hobbies - Pre-existing interests are an excellent medium for language learning. If you like music, find artists that appeal to your taste and sing in the language you’re learning.
Remember your goals (or set some) - If that is your goal, get a more attainable one. Give yourself a goalpost so that you’re not just swimming in an endless sea of possibilities with no clear direction.
Don't forget to give yourself a break - Remember that language is a long-term commitment. You must be mindful of your mental and physical needs, just as someone training for a marathon needs rest days and plenty of water.