So here are some tips to help you learn how to stay afloat, stay sane and toughen up for the inevitable rollercoaster everyone has to go on at some point in their life:

Isolate the problem from the rest of your life. A bill that's urgent shouldn't affect your relationships, your weight, your ability to enjoy life, and so on. It's hard, but actively begin compartmentalizing and quarantining the problems so they don't seep over into other areas of your life. 

Give yourself some grace and allowance for brief feelings of negativity. Need a good cry? To get some anger out? Go for it. But give yourself some parameters for how long you'll allow yourself to wallow in this mood. Don't let it fester forever. 

Once you calm down and can think clearly, map out your solutions and options. Get out a pen and paper or use a mind map and attack it from every angle. How can this issue be resolved quickly or easily? Don't just look at it from an overwhelming birds eye view. You want an approach that breaks it down for you into steps and a plan of action. 

Who is the best support for the issue(s)? Sometimes you might have a family member or friend who excels in helping you keep a level head or think of a solution for specific things. Keep a note of who is good for what purpose if you need to. Sometimes, that might be a stranger online in a forum who always shares good advice. Even AI might hold the answer to your problems if you ask!

Keep track of past problems and resolutions. If you are overwhelmed by anything - finances, health issues, home repair - you name it - keep notes of what happened, how you felt in those crippling moments, and how it resolved over time. This is helpful in the future when something new occurs and you have something solid to glance at to remind you that you always weather the storm. Documenting things in the moment will help, but also make entries about previous experiences. 

Learn how to go into proactive drive rather than reactive immediately. When something happens that's upsetting, don't just have a reaction - dig in and work on fixing it immediately. You might even brainstorm ideas ahead of time that you can refer to for things that commonly go wrong. For example, if you keep having health issues or home repair situations, have phone numbers and notes of the people you need to bring into the mix to resolve it.