If you do have a regular prayer routine, this might be a good time to add a new type of prayer to your routine, or to explore new avenues of prayer and reflection. Look through prayer books and find a prayer that speaks to you. Read a psalm a day for all of Lent. Or, just sit quietly and listen with your heart. This is giving up something in order to gain a control over yourself.
Most people are familiar with fasting from food, but fasting can be much more.
You may choose to fast from television, or suggestive music, or R rated movies. People fast from smoking or drinking during Lent. You may choose to fast from a bad habits like procrastination, or worry, or junk food. It is usually a good idea to chose something over which you feel you have very little control. In this way you can become stronger with each day that you can do without it.