There are two kinds of people in the world: those who make excuses and those who get results. An excuse person will find any excuse for why a job was not done, and a results person will find any reason why it can be done. Be a creator, not a reactor.
I tend to write songs fast, so the process usually only lasts around 30 minutes. In the studio is where I really can artistically breathe, and let my ideas flow.
Nothing in the outer world makes you feel any way. You decide what you want to feel, and then use outer people and events as permission slips to execute your feeling agenda.