Many people miss the opportunity to change their lives because they have to overcome the challenges and trade off what they have to do to achieve unshakeable results. They all hold onto what they have, satisfy them without looking for what they really want. If you want to succeed, don't be afraid of difficulties. If there aren't disadvantages, then they are probably pursuing the wrong career or living a normal life like everyone else. Nobody wants trouble but every difficulty has the seeds of opportunity to change the life. Difficulties make us have to use all the resources of intellect, health, and spirit of ourselves that normally we rarely use, even don't know whether we have these great forces or not.