It took us around 5 months to plan (around attending uni and never being in the same room to plan!!) so when the time finally came we were soo excited! I have to say the trip taught me a whole different level of independence, it showed me how much trust I could put into someone and it showed me that I completely love seeing the world. If you've always wanted to travel but you're scared or worried to leave home then I would recommend Inter-railing. It's a lot closer to home, resulting in cheaper flights if you do panic and want to come home but it can also be as long or as short as you want.
First stop- Brussels!