You must invest in the complete you. Every bit of you, without skimping. You must invest in your mind, your body, and your spirit. If you don't take the time to, you might miss the opportunity to offer the world something that no one else can, a full and unique you. I have been taking the time to invest in myself. It's hard and believe it or not, actually takes work.
There might be backlash from those around you that don't fully understand or take the time to really open their eyes to what it is you are after. But don't let that discourage you. I've realized that if I don't value and put myself first, things I don't want filling that space, start to take up room, and clearing it all back out can be a lengthy process.
Start now. Invest in yourself so that you can give the world something that no one else can.