i have found that the surest way to become frustrated when setting goals is to try to tackle the hard stuff first. instead, it is better to do the easy stuff right away. accomplishing anything will give you a sense of satisfaction and increase your motivation. have the big goals - yes - but tell yourself that you are "on the path" and that if you never finish it is alright - at least you are making progress. an activity that has no intrinsic value for you is not worth your time so do the little things that make you happy and continue to dream big. if you instantly had all that you think you want, there is no "locking it in". you will become old and sick and will eventually die so enjoy the time you have now. that is my advice

i just wanted to add that "really hard" things are not really hard. in my experience all complex activities are the result of many simple actions learned with repetition and practice. so you should build a foundation by mastering many simple things. life can/should be "play"