The person who has a 'why', can bear almost any 'how'
This is a quote from Friedrich Nietzsche. He wasn't known for being much of an optimist, but this is a very optimistic statement. What it implies is if someone is having difficulty with doing something (the how) what they should investigate is if they have a strong enough 'why' to motivate them. Motivation is something that is supplied by how strong our 'why' for any achievement is. Waking up at 5AM seems hard and not worth it depending on the reason - if the 'why' is to work on a task you don't care about you won't be motivated. If the 'why' is because if you do it for 365 days in a row there's R1 million rand waiting for you, suddenly the motivation shifts entirely. The difference isn't in your motivation levels intrinsically, the difference is in the 'why' your brain uses to justify it. Have you determined what your reason is for all of your objectives in life? If any of the 'hows' are seeming too difficult, give some thought to whether or not some of the 'whys' need to be reworked.