Ключевые слова: achievement, activity, barrier, before, benefits, blocking, boundaries, break, business, challenges, complexities, concept, crisis, date, deadline, delays, disruption, end, failure, get off, goal, hot season, important, interruption, interruptions, make, malfunctions, management, maximum, mistake, obstacle, optimization, overcome, peak, planning, point, problem, productivity, profit, progress, project, schedule, stop, stopped, success, take, term, time, work,