Besides the little expenses and even big expenses (both furnaces replaced January 2021) I have no complaints.A goal of mine and something that I have said many times was that I want to buy a second property within a year.Now this is where I am looking for advice.

Better to fix it immediately, but how long time it’s takes to replace a new boiler heater?

Assume you need to replace the floors.

Cosmetic improvements, replacing appliances, and replacing the countertops of bathrooms with quartz.

Turn washer spin speed up to the highest setting because they're unlikely to change it..5 GPM aerator on bathroom faucets1.25 GPM aerator on kitchen faucet1.25 GPM showerhead1.28 gp-flush toilets--I'm only replacing them because they're the horrific 90s toilets that clog CONSTANTLY, as the water savings will literally never pay offNew tub spout diverters because the current ones leak around the edges badlyY-splitter on top load washing machine to connect the washer only to the cold supply (it's not a high-efficiency, so it cleans well at any temperature) Smart thermostat with 74 degrees minimum cooling temp and 71 degrees maximum heating temp until 10 pm, dropping to 68 degrees until 6am Alarms on doors and windows that alert me if either is left open while the heat or AC is onNew windows, because the current ones are single panes in need of heavy maintenance and are already causing problemsPossibly solar screens on two of the windows that get the most light, particularly a west-facing one

What material is that roof replacement?

Furthermore, I read that it takes 30 days to create a habit and the only way to stop a bad habit is to replace it with a new habit. 

We had to use 3 coats of Kilz to neutralize the smoke smell, replaced all the carpet, new granite in the kitchen and bath, new appliances and flooring, new fixtures and switches/plugs, and a little drywall work.

Replacing some floursecent lights or 80s/90s spotlights with LED recessed lights is a cheap way to enhance the look of your unitsI can't comment on these being wise investments for YOU specifically but they are items to consider based on what your market is doing.

When my mom was in a car accident last week I jumped on the plane that night and flew out to make sure she was ok and help her get her car replaced.