As ericb says, congratulations! I would have to seond ericb. First, relax, take some time off. Make a trip, call some of those friends you might have ignored while working on the startup, read a good book.
I have said this before, and I will say it again, in conjunction with some of the other people's advice of some exercise, try some meditation. It helps you relax, and at the same time, allows your mind to both calm down and reflect at the same time. You will feel more confident and composed, and if you keep the practice up it will help you in your next endeavor.
The link above is a good read. Doing something (Deliberately) without measurement essentially means that you are doing it in vain. It has been a philosophy of mine that if you watch (measure or log) something, it will grow in the direction you want it to. Look back at your time with your startup and try and assess where you could have done more, or less (invariably you spend time doing things that you are not good at, which means you spend an exponential amount of time and effort trying to accomplish it). Take notes, makes index cards, whatever works for you. Don't try and do it all at once, rather let it marinate for some time in your head, constantly jotting down anything that comes to mind. Talk to people who were involved or were somehow affected by your startup work. Ask them for advice, sometimes people notice a whole lot more than they give you credit for. For example, I tend to be very agitated and quickly irritated when I am trying to put the finishing touches on anything. The very last details (like lining up elements in the UI to the last pixel) tend to get me antsy. I think they are important, thats why I do it, but on the flip side, I tend to be very good starter and executor, but a poorer finisher. Ironically it was a project mate who mentioned it to me for me to realize it. There are several books on the topic, like "Now Discover your Strengths" that can also give you some insight.
I have said this before, and I will say it again, in conjunction with some of the other people's advice of some exercise, try some meditation. It helps you relax, and at the same time, allows your mind to both calm down and reflect at the same time. You will feel more confident and composed, and if you keep the practice up it will help you in your next endeavor.
The link above is a good read. Doing something (Deliberately) without measurement essentially means that you are doing it in vain. It has been a philosophy of mine that if you watch (measure or log) something, it will grow in the direction you want it to. Look back at your time with your startup and try and assess where you could have done more, or less (invariably you spend time doing things that you are not good at, which means you spend an exponential amount of time and effort trying to accomplish it). Take notes, makes index cards, whatever works for you. Don't try and do it all at once, rather let it marinate for some time in your head, constantly jotting down anything that comes to mind. Talk to people who were involved or were somehow affected by your startup work. Ask them for advice, sometimes people notice a whole lot more than they give you credit for. For example, I tend to be very agitated and quickly irritated when I am trying to put the finishing touches on anything. The very last details (like lining up elements in the UI to the last pixel) tend to get me antsy. I think they are important, thats why I do it, but on the flip side, I tend to be very good starter and executor, but a poorer finisher. Ironically it was a project mate who mentioned it to me for me to realize it. There are several books on the topic, like "Now Discover your Strengths" that can also give you some insight.
Again, Congratulations! I wish you well.