I would start with a positive note- It’s absolutely fine to have doubts, in a situation that is very close to your heart- for it’s passion and a strong feeling is in direct touch with your sub-conscious. Now this might not be a conventional thought amongst some LOA followers, but it is my experience that has proved it, for me. So, I say with conviction- It is natural and very human, thus, alright to have doubts, while following the Law.  I’ll share my recent experience with you. I was very satisfied with my progress , as I was meditating regularly, getting connected to my innerself, feeling happy. Just then, I received diagnosis from my doctor that I suffered from skin condition called, Rosacea. For few weeks I constantly experienced burning and flushing of face skin, looking like a red chilli on fire. I couldn’t go out with family or friends, I couldn’t sleep properly, I couldn’t focus during meditation which led to stop meditating altogether, feeling sorry for my poor self. This threw me out of the tempo of my vibration. Over the next few days, I started contemplating questions, like, does LOA really work? why didn’t my meditations cast a shadow on what was coming? what did I do to deserve this? why did it have to happen to me? and the rebel mind took me on a naughty spree of doubting in other areas of life, some from another time zone in the past. One night the struggle inside woke me up and I realised my state of happiness that I had achieved through meditation practice,  was evaporating in front of my eyes- unless, I did something about it and right away. So I did, what I should have, thanks to the guidance of the Universe.  I sat down with my eyes closed and grounded my focus. It was MY time with my raw thoughts. I started asking myself one core question ( Ref:  how questioning helps in my blog on ‘Meditation technique’)- Where am I with my belief now? Has this episode shaken or perhaps broken my belief? How am I going to proceed from here in my faith? I knew in the depths of my heart that I believed in the omni power- no doubts there at all; and this was a good starting point, but  I needed moral support in my pursuit. I thought high and deep before starting to see the whole picture in the new light of realisation- Rosacea is not a life threatening condition- I have my other health faculties in tact, I can manage it and live a normal life. This was the beginning of positive light shining back again on my world. I felt more and more positive despite the diagnosis, and I held on to this positivity when meditating by being grateful for many blessings that enriched my life. One day when I was feeling particularly cheerful after a relaxing meditation session, I received a phone call from my friend who was in urgent need, so I hurried to get ready and forgot to apply my routine Rosiced cream and sun screen on to protect my ultra sensitive skin- it was one of the hot sunny days during the recent sizzling summer. Usually, it would mean that my face looked like a red tomato and on fire for hours or even days. I helped my friend with whatever was required of me and it was not before the evening that I realised I didn’t feel the usual sting on my face, nor was my face flushed despite all the sun soaking. I must have visited the mirror a ten times to confirm and each time I thanked the almighty for it was no less than a miracle- those who suffer from rosacea can appreciate the feeling.
I just smiled and said to the Universe in my heart, ‘ When I have your blessings, I don’t need to worry about any thing, as you are my saviour.’ I couldn’t offer enough gratitude to my maker, the Nirankar .
The next day, I moved around normally as I did before the diagnosis and I still have been fine since- its been two months now. I am leading a healthy and normal life; a gift from the Omni potent- thank you. 
I might have rosacea medically, but the suffering due to this condition has been mitigated by holding on to my belief , by grace of the universe. 
Difficulties are made to be overcome – so true. Doubts and questioning are, by no means, signs of becoming a non- believer or succumbing to a transitory weakness. We are allowed to be frail, at times, so long we ask for guidance from the universe. However, when we start wallowing in self pity and become a victim in our own eyes shutting out any possibility of a resolution – there is a great peril of attracting more situations to feel morose. This was my motivation to seek spiritual guidance against how I felt at that moment, rather than sink further in to a cathartic whirlpool.
I trust my belief has come out of the fire of test , feeling even stronger than before. Out of cactus has bloomed a flower of faith. Thank you Universe for your benevolence. 
Where I am happy to share my experience with the fellow believers, I would also like to insist that I am not by any reference advocating anyone to skip taking their medication or ignoring any medical advice. We need to find our core within in our own individual way. But it’s good to know that we are not alone.