Think about the big goals and dreams. Don't limit your thinking to just attending medical school or just getting through a residency program. We have a whole life and career beyond our training, and there is time to accomplish great things. We need big dreams to do that. On the personal side, having kids and/or personal hobbies while in training may ultimately make you a better doctor or scientist. So, my advice is don't put your life on hold while you're in training!