The greatest knowledge which can make you free from all anxieties and worries is you are not this 'body' nor this 'mind' , a spiritual awareness . We on this body and mind are like emotional creatures coz we are controlled by our emotions from the time of our birth to death bed. The source of every being is 'one' that is 'love' / 'god' / 'universe' / 'nature' - when we are near to the source we feel amazingly amazing , we feel complete ( we feel good ) and whenever we are disconnected - we feel awful , it's like we are missing something, we feel incomplete ( we feel bad ) .
Emotions are categorised or termed as many names such Joy, Love, Contentment, Hopefulness, Happiness, Passion , Optimism , Boredom, Pessimism,Frustration, Doubt, Worry, Anger, Revenge , Hatred, Insecurity, Fear but you can put all these emotions into two baskets one is 'feel good' and the other is 'feel bad' .
In this human being form it is quite obvious to have desires whether of materialistic possessions or liberating yourself in the higher spiritual form. In between these desires there are many more desires starting from being happy to being healthy , from having a successful career to have a great relationship and many many more depending on our environment . And every fulfilled desire make you feel good and complete ( near to the source ) , this is the way " Universe " is communicating 'ask and you shall receive' .
The Universe is always giving but now comes the question that - are you always receiving ?
If not 'why'
and to take you to the solution- your own 'emotions' plays a very important role as emotions are the indicators whether you are near or away from the source and you understand this from whether you are feeling good or bad.
When you develop this understanding within yourself , you are now fully aware about your current emotion and then you can 'shift' your emotions with the ' change in your thoughts ' , I completely agree that it's not possible that you can start feeling good when you are going through any negative emotions such as anger , hatred or etc etc but with awareness and knowledge and with your little effort of changing your thoughts , you can observe the change within and after sometime it will be effortless effort just your awareness 'will do' .
Negative emotions are the biggest resistance to any of our desire and overcoming such emotions makes our life absolutely amazing with the fulfillment of every desire . I understood desire more clearly in one of the amazing book of Esther and Jerry Hicks - "Ask and it's given " where it's being mentioned that there are two desires one is 'pure' and the other is 'resisted' , when our desire mixed with negative emotions such as fear , doubt , impatience, unworthiness it becomes resisted desire. And from this what I understood is that why most of the intellectual leaders or spiritual masters have taught us to drop our desire as because when our desire takes little bit of time to get fulfilled we get tend towards negative emotions and our desire itself becomes the resisted ones .
So from this read we can conclude that our emotions are the indicators and we must focus to "feel good" , feeling good is the answer .