I will describe today that ,if you are to remain stable calm in your spiritual life you cannot travel in the path of attachment, nor should you choose or believe in aversion. 

According to Buddhism, the main cause of dukkha or sorrow is attachment. Now here you are overestimating the ability of someone or something to bring you happiness, and overstressing the period to remain in happy a very very unfortunately long time. Whereas all emotions are not everlasting, they sometimes or the other comes to an end. Clinging to what we perceive as desirable or in other words attachment to that longing must be finite, else a infinite period of such attachment, may breed sorrow, because all that flowers once ultimately shred off. If you try to keep such memory, the experience of detachment will give you pain. But if you remember the golden period of attachment and sip juice out of it, you will never feel painful. 

Now comes aversion or strong dislike, equally misinformative that such a dislike will never end you up to something that you dearly loose some important factor that otherwise brings you help. Say for example your dislike for the most poisonous snakes. But you know not that why such a creature is at all in existence. It is true that the poison of such a creature is very harmful, but think that such a complex poison is used to prepare many medicines and psychotropic substances helpful for neurological relaxations, helpful for many treatments. If you go on strongly disliking many objects, instead of full knowledge of the hidden use of such undesirable experiences which God has prepared for our use, you will miss many subtle but sure cause that can give you relieve. So also dislike but to that extent when it does not erase the necessary information hidden to alleviate the stress in the complex universe. Dislike a fool but not the simple plain foolishness that relaxes the tension of this world. There is still something for this world to learn from this simple disliking . 

When we express displeasure quoting - it's too hot , too cold, or too humid, this discomfort may be for minor physical pain, but on either thought such extreme climate wipes off certain micro organisms otherwise harmful for healthy life. So it may apparently feel aversive but on other hand ✋ it may be helpful. So it is obvious that such strong emotions you possess ultimately keeps you on the loosing side, instead if you keep a optimal view not aggressive you gain many virtues, and qualities found in nature.

A mindful meditation is one such way where we naturally eliminate the both attachment and aversion extremities and keep clear vision of the negative or neurotic tendencies but finally move to ways of transcending both qualities to ultimate synchronisation with nature, when all are at calm and peace ☮️ feeling and we can move on in  imagination that does not give pain. 

Please go through this and try to make the meanings inbetween.

Subir Kumar Ghosh.