What has the author Youlong Hei written?

Youlong Hei has written:

'Yi gen xian de xiao ti qin' -- subject(s): Conduct of life, Success, Happiness

'Po ju er chu' -- subject(s): Conduct of life, Success

'Wo de ren sheng wo de meng' -- subject(s): Conduct of life, Success

'Kuai le shang ban Kaneiji' -- subject(s): Management, Conduct of life, Success

'Rang zi ji fa guang' -- subject(s): Self-actualization (Psychology), Leadership, Conduct of life, Success