I feel down sometimes but my belief is always been high. Whenever i feel down i pray & watch positive Loa videos.
There is nothing wrong with you.
Don't think you are not good enough because there is nothing like this when it comes to manifesting. Change your mindset. Do again all that stuff even if you have already done.
To handle yourself, meditions are best to do.
Sleep with listening to subminals it will change your beliefs to subconscious & subconscious mind is more powerful. search for any subminals there are plenty (being confident,positive, about ex, about getting call or msg many more)

You are not alone.

https://youtu.be/w-xMPMDUUFs
https://youtu.be/Vv_co-zSE4I

I don't know you have watched it before but These two will help.
Its a meditation like he is a plant & you are pouring water on him by your endless love. Do it as they says. Do it regularly. Don't wait after watching it. Go with flow. It takes time Because the thing you want is from the universe.

And also this one,
https://youtu.be/Ri3WsPDi4MY
Someone posted this music before i loved it.
Sometimes I use this while visualizing, but it may give you tears of joy. Why tears of joy? Because you would be visualizing an end result of a happy life with him which you want to manifest. don't visualize your old memories by this video because it will make you emotional.
Whatever you do ask yourself is it related to end result?even a tiny negative thought.

And if you don't feel good doing this then leave everything about getting  him for 15 days & start superman's im blessed challenge. it is on powerlawofattraction forum. by this you will be with your self love with more stable mind. After that you will automatically find your way.

You are good enough to do anything.
Lots of lights. Thank you God.

Thank you so much for this post. I actually cried reading it. It's so nice to have support and know that sometimes other people feel like this too. I will definitely be checking out those links you posted. Thank you!