If you are feeling stressed, then you should start delegating
Sitting in an office thinking about sales will not generate revenue. You have to get up and get moving! So get out on the road and kick up a storm. Without taking action you are doomed to a fate of inaction and flat or declining revenue. The good news is that YOU don’t have to be the one that increases sales all the time! Look internally at your team. Do you have someone that you could delegate some responsibility to for this? If not, then look to your mentors. What can they do for you?