Matthew 11:12 says "And from the days of John the Baptist until now the kingdom of heaven suffereth violence, and the violent take it by force."
Won't get into the literal meaning and interpretation of that, but on another level, I use this as motivation. What ever u want in life, u have to forcefully take it, because there is going to be a million other things forcefully opposing you. Everything and everybody is vying for your time...your job, family, friends, t.v., salesmen, sleep.
By forcefully taking it, I mean consciously deciding what are your priorities, put them in their place, and make time to do what you truly want to do. Schedule it in just like u have a schedule at work. If u work 8 hrs at a job (not a career which u have a passion for), schedule at least 4 hours to work on what your ultimate goal is. If u commute great distances to work, listen to audio books or tutorials or read manuals or books if you are traveling by mass transit. You literally have to steal time for yourself.
Another thing, most of the books I read about people working in a field in which they had a calling to work in, and are successful , most started off not getting paid monetarily. What they got was tons of practice and experience, then through time the money came. Examples are Freddie Roach, legendary boxing trainer who started training boxers after a lack luster career of his own ended, and in the middle of a downward spiral in life. He took other jobs to pay the bills, but was miserable. He went back to the gym he used to train in and decided to start helping boxers who weren't getting any attention. For free. For years.
The list goes on. Go research how The Beatles,Bill Gates and others got their 10,000 hours of practice in. It many many hours doing things they were not getting paid for, but they loved what they were doing , so they kept going.