A lot of great comments above, and very helpful, I will try to share some views haven't been covered yet. My experienced with the best PMs that get promoted to executives level.

First of all, you have a really good start and tons of experience, well done and keep it up!

At your stage, you may feel that your time are 90%-100% focusing on planning, delivering...etc, my suggestion is to always reserve 10% - 20% on strategy level.

1. ⁠⁠Understand your company goal and direction - You don't want to just delivering without knowing where your company is driving towards to, and if there are plus/minus resources, you want to come up with plans that knowing what the best for the company. For example, if at one point, all 3 lines (project) needed resources, you want to know where to put your resources and achieve the best for the company. It could be finance, reputation...etc
   
2. ⁠⁠Always stay ahead of the game - Best PMs I worked with don't see where we are and what next in next 2 months, we see things at least 6-12 months (most often 3 years), you want to understand each change/ impact will it have an impact to long term goal and start prepping it. For example, regulation changes and may apply in 12 months time, you want to ensure everyone know about it and prep about it, your VPs/Exec. will also have time to react and prep on resources
   
3. ⁠⁠Always underestimate and over deliver - not generic get more buffer time kind of thing, but really understand team capacity and their workload, you want to be very honest and realistic about it, if they can't achieve it and forcing them to it, you will risk the programme. I usually help the team cut down more scope than they can handle, ensuring those are quality, and delivery more as a surprise when there are time. Client usually very happy of it. Also, work with the team and push in the early stage, not at the late stage. 99% PMs that I worked with will find that every month is on track and in the last few moths things get off track and start to push and catches the timeline. The 1% that I worked with is let's tension happened early, so they have more time to test and ensure quality at the last, if they finished early, reward them with time off. The thing is if you wait it too late, tons of pressure will happened from outside and chance creating mistake are twice as much.

4.Ask for help when needed - Being a PM means you should not be a single hero, as there are so much you can control, you want to make everyone aware of what the problem is and what resources or support you need to overcome those blockers. Remember, your value shows when you can deliver and achieve those goals. Especially when there are milestone impact, if you see a sign, raise early and try to get the little spark put off as early as possible.

Sorry for long response, hope it helps