Learn Something New
To improve your life, there is always something new you can learn. There are free online courses and YouTube videos that will teach you almost everything, and your local library is full of free books you can borrow to learn about any topic you want.
If you feel that each day is just like the next one, decide on some skill or knowledge you want to pick up. Do the absolute minimum to improve each day – watch 3 minutes of video or read one page. You will find that this breaks the routine and after one week you will be a person with more skill and knowledge than last week. Appreciate that progress and continue.