No one can do this for us this happiness in life we just have to try to do it ourselves with help if lucky.
For some this can be achieved. For others it might feel or might not be attainable.
If a person goes back into the thoughts sometimes of I can't do this because I feel this way or this happened to me so I can't do this because I lost will or I became hopeless then we will go back into un-happiness mode. And Yes to some's thoughts that are reading this there is some internal problems and external enviromental influences that make it very difficult to be happy.
Happiness can comes by 2 things, a change of mindset and a change of situation. Some are capable to achieve these things some are not. I will give you examples the change of mindset is usually a temporary thing, we get happy from an event then we go back into our slump of unhappiness usually.
The other thing is changing the situation if possible by facing the adversity and asking ourselves and doings things. The first things we ask ourselves is What and How. We ask ourselves What do I need to change to make myself happy? Then once that is established we ask ourselves How do I make improvements to my life to make a better living condition?
The thing that makes all this happen in the end is the Will.