A new habit - daily retrospectives

So I'm trying to build a new habit. I've heard it takes 30 days for a habit to take hold, so check back in a month to see how I'm doing.

So what I'm trying to do is a mini retrospective at the end of each day. I'm taking 5 minutes before I wrap up for the day to ask myself a couple questions and jot down some brief responses in my journal;

• What were my successes and challenges?
• What did I learn?
• Who should I reach out to?

The 3rd question is a good one for me. The idea is to think about the people I interacted with that day. Did I promise to send somebody something? Do I want to follow up just to say thanks? Maybe there's a compliment I didn't have time to deliver earlier that day. I'm not the best networker, so this will help me make more of an effort to keep my network alive.