Study Habits That Stick
Starting to learn something new can feel easy when the material is fresh. The harder part is making room for it once the rest of your week starts to crowd in.
A study plan is easier to keep when you know what to work on and when to do it. It also helps to have a way to tell whether the time you spend is getting you closer to your goal.

Set a Regular Study Time

You won't always feel like studying. Setting aside time in advance means you don't have to decide when to study each day. Pick a daily window that fits your schedule, such as 7:00 to 7:30 in the morning.
Use the same chair and start with the same action each day. With the time and place set, you only need to decide what that first action will be.

Pick a Target You Can Finish

Learning Spanish is a direction, but it doesn't tell you when you've reached your goal. Holding a 10-minute conversation about your job or reading a news article in Spanish without a dictionary gives you something specific to work toward.
Write your target on a sticky note and put it where you study. If you can't tell whether you've met it, narrow it until you can. For the conversation goal, for instance, you know what topic to practice instead of trying to cover everything at once.

Make the First Step Easy

If an hour of study feels like too much to take on, start by opening the book and reading one paragraph. You don't have to commit to the full session before you begin. If you want to keep reading after the first paragraph, go ahead.
Leave your materials on the desk the night before. If you're using a book, mark the page where you'll start so you can get straight to the paragraph instead of deciding what to read.

Review on a Schedule

Spaced repetition means coming back to material at intervals rather than reviewing it all in one sitting. With flashcards, try recalling the answer before you turn the card over. That tells you which answers you remember and which ones still need attention.
Bring back the cards you miss sooner and leave a longer gap before reviewing the ones you can answer. An app such as Anki can schedule those reviews for you, but you can also sort paper cards by when they're due.

Track What You Produce

Time spent studying tells you how long you worked, not what you can do. Keep a log of what you produced, whether it's a page of notes, a set of solved problems or a two-minute recording of yourself speaking the language you're learning.
Use one line per session. Note the date, what you did and one thing that got easier. After a month, read through the entries and compare what you could do near the start with what you can do now.

Adjust the Plan Weekly

Set aside 15 minutes at the end of the week to ask what worked, what you skipped and why, and what you'll change for next week. The log gives you something to refer to when you're deciding what to change.
If other commitments keep interrupting your evening study time, try moving it to lunch. If you're making time but getting stuck because the material is too hard, try a less demanding exercise on the same topic before changing the rest of your plan.
Choose one change for your next study session and try it for two weeks before adding another. Put the start date on your calendar so you know when to decide whether to keep it.