Some people seem to be blessed with the ability to naturally speak a language based on input practice alone, but I think that most people need to practice input (listening, reading) and output (speaking, writing) separately. The thing that helped me the most (at least for French) was starting a journal in my target language and adding to it every day, but anything probably works as long as it gets you writing or speaking.
I carry around a messenger bag with lip balm, wet wipes, earplugs, earbuds, bandages, sunscreen, sunglasses, a respirator, a hairbrush, a phone charger, a flashlight, and a reusable shopping bag.