Travelling gives you an ideal oppurtunity to make friends while on vacation. You'll get a chance to meet new friends you wouldn't normally have a chance to talk with. People love to share their vacation tips, and some of them may even be travelling at the same time you are, so it's possible to meet a new friend that way as well. It's a simple fact of life that people do need other people, and even the most independant of solo traveller knows that they need company every now and again. If you're not used to travelling, making friends on the road can be a very alien concept and seeming impossible before you set out on your trip. However with more experience and confidence building up as you go, meeting new people alone isn't actually as hard as it sounds. Give yourself a little push each day to talk with someone new, and before you know it, you'll have friends all over the world.
Being immersed in an entirley new cultural setting is scary at first, but it's also exciting. It's an opputunity to discover new strenghts and abilities, conquer new challenges, and solve new problems. You will encounter situations that are completely unfamiliar to you and will learn to adapt and respond in effective ways. People who travel world-wide return home with an informed and much less biased perspective toward other cultures and values. Eventually you will develope the ability to function in the new culture and adapt with a whole new level of values. Your sense of "foreingness" diminishes significantly, and not only will you be more comfortable with the different cultures, but you may also feel part of it. So go there with an open mind, be prepared to change, and make most of this experience.