Be specific.
Vague statements and claims are disbelieved or ignored.
So if you get a certain result say how much.
Compare I help you lose weight fast to I help you lose 7 kilos in 7 days.
The second one is specific and believable. The first they have heard before and ignore it.
Also words like a lot or fast or any other descriptive word are not good enough. You have say what a lot is. You have to say how fast.
So let me ask you are being specific with your marketing and copy?
If not the time to start fixing it is right now.