"Laid-back" - это прилагательное. Оно описывает человека. The full sentence would be... I am laid-back and... - laid-back = someone who: doesn't take themselves or life too seriously happy to take a break from work easy-going not a difficult person to be around not difficult to spend time with/talk to relaxed/doesn't get angry easily Being laid-back in life (your personal life) can be a positive character trait (quality) but being too laid-back at work would likely be a negative character trait (slow, inefficient, not serious enough etc.)