[trollhammeren]

Welcome to the real world. Now spend your time reading (You may think not but it's very important. After all, "no man is an island") articles about other apps, how they are changing things for users and then try to come up with situations you'd want an app for (easier said than done, probably the toughest part). Also as stated below, adding a new feature to a github and/or open source project would be a nice way to start.