I work full time in the financial field so I suppose I should know better

but we have been increasing our little farm operation over the past several years. We got started with one product and it's just grown (pun intended) from there. I think what's worked well for us has been trying to stay away from trying to place a square peg in a round hole and simply working with what we have, paying cash as much as possible and reinvesting revenues back into the business.
Here's a little history of our foray into farming:
2010 Purchased 68 acres of vacant land and found approximately 300 mature and very overgrown blueberry bushes (highbush) growing on the land. Invited friends and family over to pick them free and started charging in 2012. Added more bushes in two later years. We're trying to stay organic and chemical free which is difficult as the bushes are growing in a peat bog which allows the wetlands grasses to grow like wildfire. Lots of work leading up to the season keeping the lanes mowed and the bushes weedwacked. Pruning is a must and really stimulates the bushes.
2011 County assessment department assessed our property at $90,000 more than we paid which we had to fight (and win) but this got me looking to other ways to reduce our property taxes. In Michigan, you can get an agricultural exemption or have the property re-classified as agricultural real property, either of which saves you 18 mills on your property taxes. Maple syrup operations qualify for this and despite our land being in aptly-named Oakland County, MI, we tapped 200 trees our first year. Found someone to boil the sap into syrup and we split the proceeds. We are now boiling for ourselves and tap around 800 trees at four locations.
Our focus for the first few years was on building our retail sales of our syrup. The blueberry orchard was a natural market for this and several of our customers began buying syrup from us throughout the year. We also started wholesaling to two local businesses and set up a table at a local festival annually.
2014 Purchased a home adjacent to our farm property with 10 acres. Wife wanted to start doing chickens so we bought a used coop and bought a number of laying chickens as well as around 40 meat birds. She sold some of the eggs which was also a natural market for the syrup and blueberry sales in the summer.
2015 Contacted by a local couple asking if we would like to purchase their honey business. Started with 3 hives but will need to be somewhere around 75-100 by the time we take over next year.
2016 Purchased three Dexter cattle; one bull, one steer and one heifer. The heifer is pregnant, the bull is happy and 1/4 of the steer is in my freezer. We sold the other 3/4 to our syrup/blueberry/honey customers. In fact, demand was so good that we located three Scottish Highlanders for sale and had them sold before we bought them. One heifer that's likely pregnant, one steer and one bull. I think we're going to keep the heifer and the other two are sold. All grass fed.
I think farming, as any other business startup, requires an enormous amount of patience as equipment costs can be quite high, there is always work to be done, something going wrong, equipment breaking at the worst possible time and cash flows can be very trying to say the least. My cpa, who is a college buddy, asked me "why are you doing this again?" lol I showed him our projected cash flows and it made more sense. That being said, we are still a few years away from making a profit and that could easily go awry because of any number of things going haywire.
I think many businesses fail because people have a pie-in-the-sky approach to forecasting revenues/profits, that their product will fly off the shelves, they don't have the patience/financial ability/discipline to persevere through the incredibly trying times. Being disciplined with purchases is also important. I think most of us are tempted by a bright, shiny new tractor but it's often best to find something used with low hours so you can spend the savings on another important aspect of your business.
I'm looking forward to what 2017 has in store for us. Hopefully cash flows improve this year as we have some tremendous outlays coming up.