Freelance work can be challenging. It's not easy to concentrate even if you know you depend only on you. 24/7 loneliness with nobody to talk to can be annoying, and so what I've found helpful is to continue to try to make the best of what I have. To be a good worker, you have to be willing to just keep doing what you're doing and that's harder said than done.
But how keep it strong? People involve in freelance writing jobs answer that question.
Writing jobs are one who needs you to be focused all the time. Ones offer to burn a candle, others - get up for a few exercises every hour. A little distraction helps to keep you in line. However, some people think that the best is to set tasks for yourself and do the next only when you finish the previous during all the working time.
But the most important (and every specialist can agree!) is to ask you:  "Why would I want to do that?". Please, give you an honest answer.
And understanding, that motivation to do something comes with your desire to do it. So be honest to yourself. Love what you do and do what you love!