The majority of newbies, in my opinion, are unable to see the significance and effect of Bitcoin's potential and the need to have trust in its sustained rise. As a Bitcoin investor or evangelist, I must first state that you must acknowledge and embrace its ideals before making an investment. I suppose the first thing an investor should think about is that. You also mentioned that it's crucial for investors to have a strong faith in Bitcoin, believing in its future growth and realising that it's preferable to choose long-term growth over short-term gain when it comes to Bitcoin investment.
your faith in bitcoin is more like the prerequisite thing that gets you started in bitcoin investment, once you have started, you should not be talking about not having too much faith in bitcoin or not, what you should be talking about is how you can effectively remain invested for the long run and set parameters in place that will help you get the best from your investment...
You can start investing in bitcoin with little faith and still succeed. I don't us to attach too much religion to financial investment because that can bring some form or careless behavior with the belief that their faith will correct such actions. What is needed to succeed in bitcoin is not all about faith but following the right approach which is investing with only discretionary income, setting up emergency funds and ensuring you plan long term. Even if you are new to bitcoin and do not have much faith in it but you follow this step, you will succeed as a bitcoin investor. Key point is, don't over complicate the process.
Nobody can see into the future and accurately predict what can happen in it but we can however still predict what we believe can happen in the future because of the foundation of what we believe in. Bitcoin has proven it's reputation that it can be trusted to always be profitable on the long term, this is the reason that it is bullish now and demand is exceeding supply. More smart investors are realizing that Bitcoin is a store of value to put money into and reap bountifully during bull circles.
Bitcoin is a unique investment asset, it doesn't discriminate, both the rich and poor can buy and hold it, everybody is welcomed to join the train so far you have discretionary funds. Anybody that doesn't see the potentials of Bitcoin is their own lose, you cannot force anybody to get into what is profitable for them. I encourage newbies not to wait for the perfect price before buying, buy when you have the funds because Bitcoin will surely move past that price sooner or later and they'll be profitable.