<p>I am assuming that you know you really want to go to this school/program, but you are unsure about next year.</p>
<p>I cannot say whether you personally should defer, or what, in general, constitutes “enough” to seek a deferral. </p>
<p>I can wonder about a few things. Don’t know whether or not they apply to you.</p>
<p>One cannot always defer. The excellent promotion or job assignment cannot typically be deferred because one does not feel ready or because one has some unfinished personal business. So, eventually, one must come to terms with the fact that there are limits, that an active, imaginative person will always have things that didn’t get done, that didn’t quite the way he/she wanted to, there just wasn’t quite enough time. That kind of person often has more plans/ideas/opportunities than there are hours in the day. </p>
<p>Also: to enroll in grad school itself involves a narrowing of the horizon. As an undergrad, one can consider law, business, medicine, an M.A., Ph.D., study abroad, all things seem possible. But enrolling in a particular graduate program involves the recognition that some things either are not going to happen, or will become significantly costlier to accomplish. </p>
<p>There can be a sense of loss in the narrowing of the horizon.</p>
<p>There can also be a tendency to forget that the closing of some doors brings the opening of others. You may not be able to fine-tune your undergrad transcript, you may not feel ready just now, but the new place will bring its own new opportunities–especially for someone who tends to seek, find and grasp every new and excellent opportunity. Consider the possibility that six months from now you’ll be wondering why you hesitated.</p>
<p>It is going to cost you a year of your life to defer. You’ll no doubt use the time well, but you’ll still be a year later in your overall career plans. A year is a significant amount of time to devote to “not feeling ready”. Imho, make sure that that feeling is worth that year.</p>