Scientific method is used in everyday decision-making without peer review. A person from cold climate tends to think ants harmless until he is bitten in the South; the first time he responded with disbelief; the second time he learned a lesson; next he will be extremely careful when walking on grass barefooted. An average person from Southern United States tends to think people harmless until he is duped in the pacific north-west; the first time he responded with disbelief; the second time he learned a lesson; after that he will approach people with caution.
Scientific method, although in its more refined forms it may seem complicated, is in essence remarkably simple. It consists in observing such facts as will enable the observer to discover general laws governing facts of the kind in question.The two stages, first of observation, and second of inference to a law, are both essential, and each is susceptible of almost indefinite refinement; but in essence the first man who said "fire burns" was employing scientific method, at any rate if he had allowed himself to be burnt several times.
Russell, Bertrand. "Examples of Scientific Method." The Scientific Outlook. 1962. New York: The Norton Library, 1931. 13. Print.
The fun part is watching your prediction comes true - it is no less gratifying than winning a lottery.
You can do science just by looking at things scientifically without conducting any experiment. All these double blind, inter-factorial experiments are just techniques to single out contributing factors for greater precision and accuracy, but they are not fundamental. A shrewd observer can draw lessons from historical events without conducting any experiments. One obvious example is Darwin, another is Machiavelli. Bertrand Russell said Machiavelli's theories were scientific.
Another example was China's Deng. By 1978, when Deng took the helm, entire China was poverty stricken, but Deng was virtually innocent of any economic theories; he never read Das Kapital, and Adam Smith was as unintelligible to Deng as Laplace was to Benjamin Franklin. Deng observed that all the countries that sided with the West had become exceedingly rich; all those who sided with the Soviet had become desperate poor. Deng decided to side with the West. Now China is filthy rich.*
Of course being scientific is not synonymous to being true or accurate, but science at least enables you to place the round in the vicinity of the target. The scientific conclusion is extremely tentative, subject to revision based on new evidence. So long as you are willing to revise your opinion in accordance to new evidence, you are a scientific man.
Enough emphasize is on observations. Few people realize how important the hypothetical part is. In Bertrand Russell's words:
Often the most difficult step in the discovery of what is true is thinking of a hypothesis which may be true; when once the hypothesis has been thought of, it can be tested, but it may require a man of genius to think of it.
Russell Bertrand. The Art of Philosophizing. New York: Philosophical Library, 1968
* Yes, Deng had advisors, but, if Deng was not smart, all the advisors he had were only good for digging ditches and raising pigs - this was exactly what happened when Mao was in charge. The intelligence of the chief matters; if the chief is not smart, his advisors will be of no use.