Summer is an awesome time to be a student - free time and less stress can help you clear your thoughts and really establish your goals. Regardless of age or reason, there is no better time than summer to really hone your skills.
If you'll be applying to college in the coming school year, now is the time to really set your goals in stone and get working on those applications. Personal statements take time to craft and make perfect, and if you haven't caught on by now, let me repeat it: there is no time like the present to get started. The earlier you begin planning, the more prepared you will be when the application deadlines start rolling in, and ultimately, that means you will be less stressed and more likely to succeed.
Or, if you're just someone looking to get better at a particular skill, you can think of summer as an "off season," of sorts. You have a ton of skilled professionals at your disposal to help you sharpen your presenting skills or communication habits - all you have to do is send an email.
Regardless of your reason, now is the time to put in the work. You'll thank yourself later, trust me!