Thank you for sharing the quotes. It really is meaningful and something everyone of any age and background can practice.
It is true... setting our motivation right from the beginning of the day is very beneficial for spiritual aspirants like us. Because a huge part of our lives still revolves around samsaric activities and conditions, it is best to set a strong motivation when the mind is subtle, which is when we first wake up in the morning. That way, it is easier and we have a higher chance of keeping that positive attitude throughout the day.
I like how HHDL give the example of proper motivation. When we set our motivation in the morning, it have to be one that is firm... not something that goes along the line of 'I should do this", 'I should do that today..." Because by saying "I should...", we are telling ourselves what we need to be, and telling ourselves what we should be doesn't mean we will turn out that way. So, if we set our motivation based on "I should be kinder today" and we were unkind to say... a rude colleague, this will cause us to feel much guilt within ourselves.
In a more simple term, we are never the person we always think we should be. Which is why we need to know how to transform our mind. So, for example: we must truly want to develop kindness and not just think that we should develop kindness. There's a difference... a huge one.
Another example I said I should have lost 10 lbs the last month but I didn't, this will cause me to be absolutely disappointed of myself. However, if I skew the thought to 'loose as much as I can within the month', then what ever amount of pounds I lost will be a factor to motivate me to do more for the up coming month.
When it comes to spirituality, it is the consistency that matters, not the outcome of one session. Because consistency is the one that will ultimately lead us to Enlightenment... by improving ourselves however much we can day by day. It is also for this very reason, in the Lamrim, in the chapter where meditation was explained... it was said that the best time to stop meditating is when our mind is blissful through meditating, that way, we will be happy to enter another session of meditation.