Why some upcoming business fails

Is not strange that some blossom business crash after some time, there are several reasons responsible for this
1. Lack of proper management : A new business needs your attention, if you starts a business you have to manage it yourself for years before you employ someone. If you are working else where while your business is still young, it might crash along the way
2. Lack of business plan :if you are a trader you should have a proper information on the business you are doing, know when the season when the business is selling fast and when it's not.
3. High expectations : every business is bound to start with a loss, your business is just some years old and you are comparing it with someone who's have been in it for years, so business takes time to yield big profit