Perhaps there is some comfort in knowing that it's not something that is outright impossible to deal with, since people have been living in ways other than our current modern high-tech lifestyle for the whole of human history up till very recent times.
Long-term availability of the basic needs of life from your local environment. This means being somewhere which has water, food, etc. Generally speaking, this will mean being in a rural area, or at the very least not a high-density urban area. People in areas of high population density will eventually need to move elsewhere, assuming that it's still possible to do so.
Knowledge of how to do things. Much of this will be simply the knowledge that our own ancestors had. For example, your own great-great-grandparents. To some extent, possibly even your grandparents or great-grandparents, or other relatives who may be still living.
The inner qualities: Mental attitude. Resilience. The ability to deal with adversity.
Most people don't realize that there is a problem (i.e. a problem with the way most modern Western people are living, in regards to their future after the crash). This is the reason why most people are not preparing yet. Also they are distracted by technology and the media. The crash of 2008 will look like a juvenile one armed child compared to what is coming.
Below is a list to generally think about.
Water - most important. Move to a location with a clean water source or buy rain water tanks.
Learn how to start a good quality fire. ( i.e
Paper first, twigs on top, shaped like an arch and thicker sticks as you go) Most people neglect this.Lighting: For many obvious reasons it's useful to be able to see in the dark. Especially early on when we're still used to having a constant supply of mains electricity. Also especially if there's any kind of crisis going on. Methods of lighting include candles, electric torches and lanterns, and hydrocarbon powered lamps and lanterns. In my case - i have purchased bulk boxes of matches
Weapon of choice and Ammo: In times of crises humans are known to turn against each other. Especially when they are low on food or supplies.
Food Storing: If you have no where to store your preps. Dig a hole. They actually did this in old times.
Learn how to make paper. This one is often neglected. But you'll still need to wipe your ass once the paper runs out.
Buy some chickens. Eggs are a great source of protein. Try to reframe from eating the chicken.
Transport/Get in tune with nature. Being able to pick up on natures signals such as noticing what direction the birds are going.
Get to know people within your community.
When the dollar crashes you'll want to trade items with others. Ie eggs for honey etc.Powdered milk. Is great.
The answer to how to make time to prepare for the collapse of the economy is to learn to lose your addiction to the economy. It will be much easier if you can start on this before the economy and most of its fruits are taken away from you, then you can learn it gradually.