Waiting for motivation to arrive before you start revising is a trap. Motivation follows action, not the other way around. The students who revise consistently are not the ones who feel motivated every day - they are the ones who have systems that make starting easier.
Start impossibly small
If you cannot face a revision session, commit to just two minutes. Open your book. Read one page. Answer one question. The barrier to starting is almost always the hardest part. Once you have begun, continuing is much easier.
Remove friction
Make starting as easy as possible. Keep your revision materials ready. Close distracting apps before you begin. Have a specific place where you revise. The fewer decisions you need to make before starting, the more likely you are to start.
Use external accountability
Tell someone what you plan to revise today. Study with a friend, even virtually. Use an app that tracks your activity. External accountability creates consequences for not starting that your internal motivation cannot.
Focus on the process, not the outcome
Do not think about your final grades. Think about completing this one session. Small wins build momentum, and momentum builds motivation. Celebrate completing sessions, not just getting good marks.
Accept that some days will be hard
You will not feel motivated every day. That is normal. What matters is showing up anyway. A mediocre revision session is infinitely better than no revision session.