I guess the moral of the story is in life, if we want to accomplish anything, we need to build a strong foundation. Without a foundation, it is not possible to achieve something that's "sky high". Coming back to the practice of Buddhism, it is also very important to build a foundation. Without a strong foundation, the practitioner will not be able to achieve any form of attainments.
A solid foundation would be to study and practise the Lam Rim (Pabongka Rinpoche's Liberation in the Palm of your Hand) and do the guru yoga daily along with Dorje Shugden's prayers. If possible, do meditation retreats to stabilize the mind and contemplate on the teachings.
The following is a summary of the structure of the Lam Rim as stated in wikipedia:
"the greatness of the author of the lamrim, to establish the authenticity of the teaching
the greatness of the lamrim itself, to gain respect for it
the way the instructions are to be received and given
the way the students are to be guided through the subjects
this fourth subject has two divisions:
the way to rely on a spiritual guide
the way to train your mind on the basis of the correct way to rely on the spiritual guide
This last heading contains the rest of the instructions under the headings:
the way to encourage yourself to take the essence of this precious human rebirth
the way to take the essence of this precious human rebirth (that is: training your mind in the paths of the three scopes included within the lamrim)
The path shared with persons who have the modest scope motivation (striving for a rebirth in the upper realms)
the reality that this life will end and that you will die
the suffering in a rebirth in the lower realms (a rebirth as hell being, hungry ghost or animal, which you want to avoid)
(so you) take refuge in the three Jewels: Buddha, Dharma and Sangha
(and adjust your behaviour of body, speech and mind according to the) law of cause and effect/ karma
which will lead you to a favourable rebirth within cyclic existence in the human-, demigod-, or god realm.
The path shared with persons who have the medium scope motivation (striving for liberation of cyclic existence)
The truth of suffering (in cyclic existence in general, including the favourable rebirths)
The truth of the causes of suffering (the afflictive emotions, especially ignorance)
The truth of cessation (there is a state that is free of suffering and its origins)
The truth of paths (the way to attain this state free of suffering and its causes by practising ethics, concentration and wisdom)
Another presentation of the middle scope subjects is the presentation of the 12 links of dependent arising
The training in the medium scope path will lead to the development of the wish to be liberated from all un-free rebirths in cyclic existence through the power of afflictive emotions.
The path of persons who have the high scope motivation (striving for complete buddhahood)
the advantages of the mind of enlightenment (the wish to become a buddha for the welfare of all sentient beings)
the way to develop the mind of enlightenment
the 7-point instruction in seeing all sentient beings as your mothers (from previous lives and contemplating their kindness towards you)
the instruction on how to exchange your self-interest for others' interest (by looking at the drawbacks of self-cherishing and the advantages of cherishing others)
the way to train your mind after developing the mind of enlightenment
training in the perfection of generosity
training in the perfection of ethics
training in the perfection of patience
training in the perfection of joyful effort
training in the perfection of concentration
training in the perfection of wisdom"