Only for my life ....
Naa seriously - I ran quite a bit back in the army and got good at it (10km on 30 min, boy I was young back then
), but because I absolutely hate running (would rather bike or do some sport where I have to run for something specific ... like a ball), I never kept up with it when I left.
But it all depends on what you want to achieve. If you are planning on specific runs you want to join in on, or certain distances, you should make a plan and stick to it. If it is just for fun, then just make sure to get out there 3 days a week and make sure to keep your pauses. Overstraining is one major issue why many start and fail, because they try to do it all at once.