In a relationship you are always learning something new. Wether it be about your spouse or your circumstances. Life is ever changing and if you are unwilling to learn and change its going to be a rough road.
Life isn’t stagnent, its moving and most of the time moving fast. Keep talking to your spouse and make sure that you are moving in the same direction and learning with eachother how to address each new twist and turn. Things as simple as a new car payment can dramaticly affect things in life. It could change your buget leading to a change in how many times you eat out, if you can buy new clothes and the like. Don’t underestimate how big of an impact a small change can make.
Always be willing to learn.