Maybe the most important lesson of MMT is that public debt, deficits and all those things that so frequently are at the center of the public debate are irrelevant compared to what's really important: real resources.
It doesn't matter if you have a big or small public debt (in your own currency), what's important is the real things in the economy.
If people is, for instance, using dollars instead of the currency of the country, it's, probably, because your country depend totally on imports (in the worst cases for basic things like food or energy).
If that's the case, the first steep to solve it, it's to recognize the problem. If you don't recognize the problem, you will finish addressing virtual problems like deficits or public debts instead of real resources constrains. Those are very difficult problems to address, but it will be even more difficult if you don't understand them.
The mainstream advice to development is: open your economy to competition, reduce deficits and public debt. The result of that is the impossibility of an agricultural, infrastructure or industrial policy that solve the real resources problem.