Each player has his own characteristics, his style of play, his preferences, results and statistics. There are probably players for whom 20-25 hours a week is enough, but in my opinion, this is not enough. If for you poker is a full-fledged source of income, then you should spend time on the game as well as on any other job. On average, the length of a working week in hours is approximately 40 hours.I think it is advisable to play and study at least 25 hours a week.