What @blprice61 wrote. I can only second that.

I've been playing solo for most of the time, and I'm getting close to 1,000 hours. Just take your time, don't rush things. Always remember that this is not a pure action title. You will gather resources, craft, build, sow, harvest or just enjoy the scenery and the fruits of your labour.

Or you will sail the fair seas, explore and find new things.

Fighting is just one part of that. And boss fights a very miniscule part.

The journey is the goal.