Think, believe and assume that Allah is having mercy on you, and He will start doing it for you.
Develop the habit of thinking about God's mercy
Memorise this simple point: When we think of Allah's mercy, His mercy actually starts flowing to us. When we think of problems at hand, anger, people's negative attitude, disease, fear, doubts, we block His mercy from flowing to us.
Learn how to focus on Allah?
Think, believe, assume, expect, or even pretend that you are being showered with the mercy of Allah. Do whatever you can to fix your focus on this one thinking: Allah is the Most Merciful and He is having mercy on me all the time.
Develop the habit of thankfulness/shukr (gratitude)
Gratitude/thankfulness (shukr) is the most powerful tool Allah has given us. Start appreciating Allah for His favours and see miracles in every area of your life. Allah says in the Quran: O mankind ! remember the favour of Allah on you" Surah fatir verse 3.
To develop the habit of gratitude, get a digital counter (tasbeeh) and commit yourself to counting at least 2000 thanks for the favours from Allah. Consciously think of different blessings from Allah, think why you are thankful for this favour, think how would you feel if this blessing never happened to you - and press the counter to count your thank by saying "Alhamdulillah"
Develop the habit of fearing Allah
Our ego/self is our biggest enemy as it puts a veil between us and Allah. Our logical mind tries to fool Allah by taking credit for our successes, hard works, efforts, comforts. When we make a mistake, we think that we are not at fault - it is someone else's fault. See how our ego tries to come clean and put all the blame to situation, others, luck, or anything it thinks can be used to shift the blame on.
Increase your knowledge about Allah
Often, the lack of information about Allah is the problem. We don't even know that Allah's mercy is bigger than His anger and wrath. Try to read Quran verses about the mercy of Allah. As your knowledge about Allah will grow, you will come to know that you have been a fool to think that Allah's anger is bigger than His mercy (it is a shaitan's move to keep us away from Allah and think of Him as cruel).