When you have asked your question (step 1), found the evidence (step 2), and critically appraised the evidence (step 3), it is time to implement that evidence into your practice. The research based evidence should be integrated with your own clinical experience and expertise and the patients' preferences. Implementation of evidence into practice may be challenging.
Description of different implementation strategies can be found in these books:
Below is a list of questions that when answered in relation to a local context, may help you decide whether results from a study can be applied to your practice
UpToDate Decision Analysis
Dowding, D. and Thompson, C. (2009). Evidence based decisions: the role of decision analysis
Strategies from Queensland Health to implement change in practice by adapting evidence into local context. View the series of Webinars that cover implementation strategies, facilitation and key learnings in translation of knowledge into practice.