The Messenger of Allah (peace and blessings be upon him) said, 

“The morning meal (al-suhoor) is a blessed meal, so do not abandon it even if you take only a sip of water. Verily, Allah and his angels send blessings upon those who take the morning meal.”

(Ahmad)

In practice:

• Set an alarm.
• Wake up around (15-30 minutes) before fajr.
• Keep a couple of dates and a bottle of water near your bed. This will help you to remember  your morning meal.
• Eat a healthy breakfast before you begin your fast. 
• Try to include fruits, nuts and vegetables. Complex carbohydrates like oats are good as they provide a steady release of energy.
• Avoid having too many fried, spicy and sugary foods. I know they’re tasty, but they won’t keep you going throughout the day!
• Drink lots of water to keep your body hydrated.
• Never skip suhoor!