I'm gonna repeat what some have saud a lot i know but i'll tell you what my experience was. When i started, i wanted to learn fast. There was no way i was gonna be a mediocre to passable player for two or three years. So what did i do? I put in the time. For the first year I did three hours a day every day, EVEN on holidays (which looking back was slightly pointless, at some point it seems your fingers and muscles need time to adapt and learn and past a certain amout of hours per day, i don't know that you get any benefits). I did learn fairly fast, but i do remember a LOT of times when i like you slapped my bass in anger. ****, let me be honest here, sometimes it actually made me cry in anger.
I wanted to be good NOW (i was 17 but felt i should have picked up an instrument years before) and i'd obsess over details. I couldn't bear that i was repeating things over and over for hours and still not always getting it right, still messing up. I'd get really angry for example if i somehow played even one bum note (years later realizing that even the best of us will sometimes do). I remember particularly obsessing over playing fluid slides. I wore my fingers out until they bled (literally, it cut through my fingers) doing slides over and over (and years later realised my action is pretty high which is probably why i found slides so hard to get right...). Never before or since since have i ever met anyone who had hard skin on their fingers as thick as i did then, i had the permanent imprint of strings on my fingers, deep grooves that required me to line up the string just right otherwise i couldnt play right, they didnt go away until i cut down my playing time to an hour a day a few years later. After a year i had cut down to 2 hours . After a year more to 1 and then after about 5 years i stopped the daily practices..which at this point anyway weren't so much practices as just playing about an hour worth of songs i liked along to records.
My point is learning any instrument for anyone can be very frustrating (and sometimes painful) and long and time consuming especially when like me you just don't want to wait years before you're good enough for a band and shows (ironically i wouldn't be in a band for 5 years by which point i was beyond ripe for live performance..not having played in a band for so long was detrimental because for one, turns out i was a much better player than i gave myself credit for, people couldn't believe i had no stage experience and had never been in a band...)
There are some things that just take a while to assimilate, you do have to be content sometimes in not being quite the player you really want to be (in fact you might never completely be the player you wanted to be). I was lucky that the music i actually want to really play isn't that hard on a technical level (though i pushed myself further just cause i could), for sure if your idols are very technical players or absolute virtuosos (I don't know Morbid Angel other than by name but it seems its rather technical from wat i read), you're in for a few years of disappointment, sometimes a lifetime if you're trying to perfectly emulate them. But that doesn't mean you should give up. If you're serious about your instrument, your brain and muscles should follow at some point. But you got to put in the time...and much more importantly...give it time. Eventually after some years the further improvements in your playing and technique will come slow and without you barely noticing, but they'll be there. One thing though you'll also learn in time, to accept your limitations. Most of us have them. Above everything else, try to have some fun. It isn't always there when you're learning, but it should be there somewhat. If it's not there at ALL then maybe playing music isn't your thing...
