Losing your motivation is no fun at all, but rest assured that you're not alone. Sometime throughout life, most of us will feel unmotivated, discontent, and stressed. And often times it's the uncertainty about how to tackle various stressors that's causing this feeling of being "lost."
Whether you're talking about school, home, work, or your social life, stress is typically caused by lots of change happening in a short period of time. There's no doubt that our fast-paced world is constantly changing, so stress is pretty much unavoidable. Although there may be no perfect solution, there are several good ways to deal with your feelings.
First off, it might help put things into perspective if you identify the key points of frustration in your life. Be as specific as possible so that you can begin to figure out what things you can do to make improvements. For example, maybe you feel your schoolwork is too difficult. If this is the case, getting a tutor in your most difficult subject might alleviate some of stress that the schoolwork is causing.
Next, find a way to relax for a specific time period each day. Whatever you enjoy — working out, blogging, reading romance novels — reserve at least 30 minutes every day for your favorite activity. After you do something you enjoy, you may be more driven to tackle other things (such as study for an exam). You could also try a relaxation technique to help zap the stress. Find a quiet place, close your eyes, and imagine your favorite place or thing and focus on it for a few minutes. Remember to relax your mind and body and to take deep breaths.
And don't forget that you are not alone. Everyone feels lost and unmotivated sometimes, so share your feelings with others. Talk to a school counselor, coach, trusted friend, or parent. Discussing your stress is a healthy way of dealing with it. Remember that teachers didn't go into teaching to make you miserable. If it's one class or school assignment that's causing your woes, talk to the teacher of that specific subject — I'll bet you'll be surprised at how much he or she is willing to help. Or suppose you have a big history project and an English paper due on the same day. If you let both teachers know your situation, one of them might just work with your class and push back the date.
Finally, remember that every bad situation eventually comes to an end. Although it might feel like an eternity, things will get better. Just don't expect immediate results. Don't give up. Keep in mind that it probably took a while for you to start feeling the blues, and it may take a while to come out of them, too.