I, myself too, am looking forward see other solutions to your question my friend; from our fellow comrades how they do it to help us out. As for me, I really think the big issue here is communication break down. Most of those that quit or give up do not give you feed back as to what they think of what you have written. This break-down never lets you know what is going on on their side. If only you could see their side, may be you could have known as to why they are doing so.
Their motive as to why they joined SFI should is an answer to the question. If you knew what motive they had in joining, you would either have helped them achieve it from SFI or convinced them to change and see things as you do see them.
Oh perhaps how we do it does not convince them to stay. If only there was a way to make them see what makes you stay / carry on. All I see is closing down to one thing which is not done properly communication.
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I, myself too, am looking forward see other solutions to your question my friend; from our fellow comrades how they do it to help us out. As for me, I really think the big issue here is communication break down. Most of those that quit or give up do not give you feed back as to what they think of what you have written. This break-down never lets you know what is going on on their side. If only you could see their side, may be you could have known as to why they are doing so.