A cosy home is not about buying more. It is about soft light, a few things you love and somewhere comfortable to land at the end of the day.
Start with the lamps. Swap the harsh overhead light for two or three warm lamps and the whole room changes by evening.
Add texture next: a chunky throw, linen cushions, a plant that is hard to kill. Keep a clear surface or two so the room can breathe.
Finally, make one corner just for you. A chair, a small table and a good book is all it takes.