This topic is quite tricky...
A quick test question can be used to illustrate this point. Ask the question "why are you saved"? If the answer is "because I believed",
sola fide has been misunderstood as well as the Gospel. However, if the answer is "because Jesus died for me, a sinner", that is the Gospel and that is sola fide.
The issue is this - the reason salvation is through faith is because it is first by grace! Meaning, the gift has been given first- Jesus - his work, perfect life and person, his atonement - is finished. My point is this sola gratia is the reason why it is sola fide.
In the Apology of Augsburg, Article IV,54-56 we have this
54] Scripture frequently implores mercy; and the holy Fathers often say that we 55] are saved by mercy. As often, therefore, as mention is made of mercy, we must keep in mind that faith is there required, which receives the promise of mercy. And, again, as often as we speak of faith, we wish an object to be understood, namely, the promised mercy. 56] For faith justifies and saves, not on the ground that it is a work in itself worthy, but only because it receives the promised mercy
The result of putting the accent on one's faith is pride and self-righteousness, when grace is the accent - there is no room for boasting even if you have faith, because salvation is by grace first on account of Christ's work alone. Your faith contributes nothing.
I hope this information is not new to you but if it is, I hope you find security in the fact that God did all that is necessary for our salvation without any of our contribution needed.
PS. My blogging has been sparse due to the pressure of thesis writing, I could use your prayers.