Is it permissible to ask the Muslims -when meeting with them- about the state of their faith or their hearts? One of them said to me that this is a matter of the unseen and that it is not appropriate to ask about it.

What is the Islamic ruling on the issue of imitating the kuffaar in their customs and dealings? What are the guidelines concerning that in Islamic sharee'ah? Is every imitation of the actions of the kuffaar regarded as a haraam kind of imitation, knowing that there are many things that the kaafirs do that are not haraam and are not condemned by sharee'ah, where the one who does them does not do them merely to imitate the kuffaar, but because he thinks those things are good, as Ibn Mas'ood (may Allah be pleased with him) said: "What the Muslims think is good is good before Allah"?  
Please advise us, may Allah honour you, and please give me a detailed answer and explain to me the guidelines on this matter.

When I do Salah (formal prayers) or intend to do good deeds I often get very evil thoughts in my mind. When I concentrate in Salah, and try to focus on the meaning of the words, evil thoughts enter my mind, which make evil suggestions about everything including Allah. I feel very frustrated and angry about this. I know that none forgives sins except Allah alone, but because of my thoughts I feel that there is nothing worse than to have evil thoughts about Allah. After Salah I ask Allah's forgiveness, but feel very bad because I want to stop these evil thoughts, but I can't stop them. These thoughts spoil my enjoyment of Salah, and also make me feel as though I am doomed. Please advise me.

Question:

I have a few questions concerning parents
1-What right does my Mother have over me?
2-What right do I have over my mother?

How should we call people to Islam?

I have committed many sins which no one knows of except Allaah. What do I have to do so that Allaah will accept my repentance?

How sound is this hadeeth: “The ink of the scholar is more sacred than the blood of the martyr”?

Is it permissible to remove janaabah by means of tayammum?.

What is the ruling on one who delays Hajj for no reason when he has the means and is able to do it?

In order for a person to be allowed to sit during the obligatory prayers, is it essential that he should be completely unable to stand? Or is it also permissible for a person who is able to stand, but it is possible that it may lead to harm? What is the definition of the inability that makes it permissible to sit during the prayer and not stand, without that incurring sin or punishment?.

I hope you can give me some examples of good deeds that we can do every day to increase our hasanaat.