We often cite time constraints as a reason for avoiding a particular activity. It's so much easier to say, "I don't have time" than to admit to someone else that they simply aren't a priority. We even make excuses to ourselves, putting off things we say are important to us because there just isn't time for them.
The truth for most of us, however, is that time is 100% in our control. We may have commitments to keep, such as to a spouse or child or job, but those commitments were our choices to make. We ultimately choose how to spend our time, and when we say "I don't have time," what we are actually saying is, "I'm choosing not to make time."
Do you write regularly? Is this something that's important to you? If you aren't doing it, I'd argue that it isn't actually important to you -- even if you say it is. Our true values are determined by our actions, not our words or beliefs.
If you've been telling yourself you simply don't have time to write, I'd like to extend a challenge to look a little more deeply into the reasons you aren't making writing a priority. It's okay if there are so many more important concerns that writing doesn't make the cut. Just be honest about why you are making that choice.