So in the bid to find out about the strength of the eagle, I found out that one of the amazing things about the eagle is how it moves in the air and that's why God would refer to it in describing the movement of the believer. It is not so much about the eagle's physical strength; the major characteristic of the eagle is that it prefers to soar than flap it's wings.
Hence, what could be observed is that the eagle likes to conserve its energy. It has long and heavy wings and if it flaps like other birds, it will grow tired easily. Its wings were not designed for flapping but were designed for soaring.
Any being that seeks to accomplish much with minimum energy is strategic. The essence of strategy is about leveraging your advantage wit minimum effort to accomplish great results. The eagle is strategic. This however does not imply nor justify someone engaged with doing nothing but still expecting results. Developed nations don't leave man's responsibility for God to do; they do whatever is required f man to do to achieve their aim. Wanting to achieve something by doing nothing is vanity or laziness or irresponsibility or a combination of all.
However if you insist on flapping when you were designed to soar you'll be surprised that you'll be going down instead of rising higher because you'll grow tired. The Christian life is designed to be run by grace, not by human struggle. It is a sad reality that many Christians celebrate flapping; we celebrate input more than output; effort more than the result.
A Christian that will function with grace must be sensitive to the anointing; you only move when you sense the motion of the Holy Spirit. This is where your strength lies. Bear in mind that God's grace for your life is in your design.
Remain blessed and keep soaring like the eagle.