How to enjoy life again

I used to be go go go, sports, school, games, study, homework, even had tournaments every weekend so literally never had a day off, but I was happy and enjoyed life. Right after my bachelors I went immediately into a masters and now I’m interning and finding it hard to even want to show up for a shift. I have no motivation. I am only 24!!! Please give me your realest advice, how did you get your spark back?? How do you make sure you’re enjoying life?