A lot of advice on how to achieve long hair emphasises the need to trim often. I agree that cutting the ends of the hair periodically helps keep them 'fresh' allowing you to reach longer lengths, though I think it's more important to cut hairs effectively rather than obsess over getting full trims.
In this video I explain how I 'dust' rather than trim to get rid of any split ends or thinness which I think really has helped me maintain long hair. I feel silly saying dusting but I can't think of another word for it, so hopefully people understand what I'm talking about!
Do you prefer to trim or dust?