This is one of the biggest TRP lessons I've learned over the last year as a recent grad joining the work force. My job is not very demanding and I often only have a few hours of real work to do a day, if that.
As you can imagine, this situation has left me with a fair amount of free time. In the past, I've wasted a lot of this time on social media: responding to text messages, checking Facebook, snapchats, and the like. I would even have day-long conversations with my LTR over text while at work, responding to her texts every few minutes because I didn't have much else going on.
If you've spent any amount of time on this sub, you can tell that this is a recipe for failure. The more time you spend being available to women, the less they respect your time and the less they respect you as a man. And after all, they are completely justified in this belief. As a man, your primary goal in life is your mission and pursuing your goals. A lot of your mission as a man is related to your career. And if you spend all day of your 9-5 texting her, what does that say about what your priorities are?
I've noticed that my girl will not be pissed at me if it takes me several hours to respond to her texts. Maybe she will feign being annoyed that you took so long, but deep down she's pleased that you have more important things going on in your life. It's definitely much better than responding every 5 minutes. Longer time in between interactions subcommunicates that you have a lot going on in your life and simply can't spend your entire day interacting with her. Furthermore, absence makes the heart grow fonder, and she will actually value me and respect me more the less I communicate with her. It shows that I'm busy taking care of my shit as a man and she is secondary in my life.
Treat the hours of 9-5 (or whatever) as your time for masculine development. If your job isn't keeping you busy, find a better one that suits your goals. Or, spend that time improving yourself, learning, reading, becoming a better man. But don't squander it talking to her all day.