A budget makes you aware of where money is going so you can adjust when needed.
Online tools can help you track your spending and set up a budget. Searching for "budget worksheet" will bring up options that can give you a framework and help you remember expenses that don't happen every month, such as car maintenance.
Once you know where your dollars are going, you may spot categories to trim. Finding ways to save money can also help you start or bulk up an emergency fund.
About that emergency fund: You don't need a huge amount stockpiled for it to make a difference. Even $250 in savings can help a family avoid pitfalls like missing a utility payment, according to a 2016 study by the Urban Institute, a Washington, D.C.-based think tank. Gradually building to $500 or $1,000 adds more protection against financial setbacks.
If the paycheck from your main job is in danger of shrinking, a side hustle can be your friend. By thinking ahead, you can have your Plan B ready to go.
Things that you may be able to do include: selling gently used clothes, trading in old electronics, taking surveys, tutoring online and selling handcrafted items on Etsy. You may not make big money, but it will be something. If you sell items that you make, now may be a good time to increase inventory.