For the novice runner, I'd say to give yourself at least 2 months of consistently running several times a week at a conversational pace before deciding whether you want to stick with it. Consistency is the most important aspect of training at this point.
Frank ShorterThe potential elite runner must realize that hard means hard, easy means easy and they must patiently seek out what combinations work for them. They have to learn to be persistent and patient with their training and racing.
Frank Shorter