Marriage journal

Anyone here do one? If so has it improved or helped your marriage? I’m not in a horrible relationship. I love my husband and the life we have. We got married when I was 20 and have been together for 7 years now. I feel like we have been to comfortable with our life and lost our “spark” from when we first started dating. We have been through some tough times and I feel like we have changed because of these events. So I wanted to try this out to make our marriage even better and bring the old sparks out. What kind of stuff did you write about and did you do an entry everyday? I’m lost when it comes to journaling lol