Benny Leonard and Henry Armstrong were both KO'd in their first fights; Billy Conn was 13-6-1 after 20. They all ended up doing pretty well, as did Monzon, and Arguello (2-2, KO'd in debut), because they were learning how to fight. Boxing is a whole bunch more than wading in throwing haymakers and splattering opponents; now and again they'd rather not get splattered and have some ideas about you. Get yourself into the best condition you can be in (i don't mean Mr Universe condition but go ten hard fast rounds and want more condition.) because this you can control; make sure your mind knows that you will not get tired. Since you are staying out of the weight room and in the gym, you'll have lots of tim to work over and over again on your defensive moves and your punches; you are developing 'large muscle memory' so that your body reacts seemingly on its own. When you spar take a moment to analyze what is going on in the ring; what is he trying to do to you and what will you do about it? Suppose that as you move about jabbing a bit, feinting more, that it becomes clear that he wants to land the left hook; well that gives you two (at least) choices, to beat the hook with a short right hand or to get under the hook and hook him to the body.... Do you see my point? Don't be in a hurry to punch for its own sake; drive that fear of getting tired out with the knowledge of your condition, and minimize the times you get hit. Condition your body to fight, then keep your brain busy plotting strategy.