What should I do to wake up for fajr prayer?

Some things that can help you wake up for the fajr [dawn] prayer include:
1- Going to bed early.
2- Having the will to wake up.
3- Reciting the verse of ‘Al-Kursi’ from the chapter of Al-Baqarah.
4-Taking refuge in God the Almighty from the accursed devil and making ablution upon waking up.
However, it is preferable to ask someone to wake you up for fajr prayers.
And God the Almighty knows best.