Roman Tschäppeler is a consultant and creative producer with his studio guzo, based in Biel, Switzerland. Mikael Krogerus is an editor at Das Magazin, the cultural supplement of four of Switzerland's leading newspapers. Together, they are the authors of an internationally bestselling series of smart-thinking books, including The Decision Book, The Change Book and The Test Book.

Praise for The Decision Book:'New-year stimuli to anyone who manages anything - even just their desk.

Roman Tschäppeler is a consultant and creative producer with his studio guzo, based in Biel, Switzerland. Mikael Krogerus is an editor at Das Magazin, the cultural supplement of four of Switzerland's leading newspapers. Together, they are the authors of an internationally bestselling series of smart-thinking books, including The Decision Book, The Change Book and The Test Book.

Praise for The Decision Book:'New-year stimuli to anyone who manages anything - even just their desk.

Roman Tschäppeler is a consultant and creative producer with his studio guzo, based in Biel, Switzerland. Mikael Krogerus is an editor at Das Magazin, the cultural supplement of four of Switzerland's leading newspapers. Together, they are the authors of an internationally bestselling series of smart-thinking books, including The Decision Book, The Change Book and The Test Book.

Praise for The Decision Book:'New-year stimuli to anyone who manages anything - even just their desk.